TY  - BOOK
AU  - Frissel,M.J.
TI  - Cycling of mineral nutrients in agricultural ecosystems. ( 1st Int. Symp. environmental, The Netherlands May 31 June 14, 1976) Developments in Agri. and managed Forest ecology, 3
U1  - 631.8 
PY  - 1978///
CY  - NY
PB  - Elsevier
ER  -