TY  - BOOK
AU  - "Frissel, M.J. "
TI  - Cycling of Mineral Nutrients in agricultural ecosystems
U1  - "631.95'811(100)""1976.5.31/6.4""(082.2)   L8" 
PY  - 0000///Amsterdam
CY  - 1978
PB  - Elsevier Publishing Co.
ER  -