TY - BOOK AU - MCLAREN, A Douglas AU - PETERSON, George H TI - Soil biochemistry. V 5 T2 - Books in soil and the environment U1 - 631.4:577.1 PY - 1967/// CY - New York PB - Marcel Dekker KW - Biological nitrogen fixation KW - Soil biochemistry KW - Urea transformation ER -