Methods of soil analysis Smithsonian Libraries and Archives Object Details Author Klute, Arnold Weaver, R. W (Richard W.) 1944- Mickelson, S. H Sparks, Donald L. Ph. D Bartels, J. M Dane, Jacob H Topp ...

What is carbon-14 dating? The invention of radiocarbon dating elegantly merged chemistry and physics to develop a scientific method that can accurately determine the age of organic materials as old as ...

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Methods of investigation of productivity of invertebrates in terrestrial ecosystems / A. Macfadyen -- Methods of production estimation in various types of animal population / W. Kaczmarek -- ...