TY  - BOOK
AU  - Dalton, G.E.
TI  - Study of agricultural systems
U1  - 33:63.001.5(100)(082.2) L5 
PY  - 0000///c 975
CY  - London
PB  - Applied Science
KW  - G.E. Dalton
KW  - Agriculture-economic aspects-congresses,System Simulation
ER  -