TY - BK AU - Blackburn,T.H. AU - Knowles,R. TI - Nitrogen isotope techniques T2 - Isotopic Techniques in Plant, Soil, and Aquatic Biology Series SN - 0-12-416965-1 U1 - 581.19214 PY - 1993/// CY - San Diego, CA (USA) PB - Academic Press, KW - Analysis KW - Analytical methods KW - Denitrification KW - Isotopes KW - Mineralization KW - Nitrification KW - Nitrogen KW - Nitrogen fixation KW - Spectrometry KW - Wetlands ER -