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Radiocarbon AMS Dates for Paleolithic Cave Paintings




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Presence and prevalence of microplastics in the water and marine organisms of the Gulf of Santa Elena, Guanacaste, Costa Rica




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Species distribution of the rocky intertidal zone organisms at La Islita in Cuajiniquil, Costa Rica




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Biological treatment of Monteverde gray water using effective microorganisms and mountain microorganisms




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Themenkreis b Study of the drainage of Karst aeras considering problems of the utilization of Karst waters and water supply Themenkreis c Relations between cave origin and landscape




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Frank Armstrong drop kicker




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Analyzing Student-Made Films




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Sally Watt Florida radio programs collection




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Wamsley Collection of Spanish American War Photos




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Identifying the woody resources of Diepkloof Rock Shelter (South Africa) using scanning electron microscopy of the MSA wood charcoal assemblages




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Charles Thomson




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Crayton Arms




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Hapton Arms




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Hapton Arms




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Hapton Arms




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Hapton Arms




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Louis Armstrong sings




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Louis Armstrong performs on the trumpet




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Interior support beams




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Moat And Palms Fort Jefferson Dry Tortugas Oct 1956




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Wood Stork Colony Crooms Hernando County Florida May 8 1958




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Bloomstack of Epidendrum anceps Corkscrew Swamp Collier Co Fla Mar 9 1966




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Dick Merriwell's help, or, Flint's struggle with himself




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Microfiber density in relation to elevation and pollution source in two freshwater streams in Monteverde, Costa Rica




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Seismic Mseed Dayfiles




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Stable isotope variations in modern tropical speleothems: Evaluating equilibrium vs. kinetic isotope effects




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Large kinetic isotope effects in modern speleothems




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Monitoring trends in bat populations of the United States and territories: problems and prospects




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Ecological Classification of Subterranean Organisms




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Community Structure of Subsurface Biofilms in the Thermal Sulfidic Caves of Acquasanta Terme, Italy




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Hypogenic karst at the Arabian platform margins: Implications for far-field groundwater systems




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Hypogenic karst at the Arabian platform margins: Implications for far-field groundwater systems




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Dissolution of limestone fractures by cooling waters: Early development of hypogene karst systems