TY  - BOOK
AU  - Duckham,Alec Narraway
AU  - Masefield,G.B.
TI  - Farming systems of the world / 
SN  - 0701113618
U1  - 338.1 DUC 
PY  - 1970///
CY  - London : 
PB  - Chatto & Windus, 
KW  - Agriculture
KW  - Economic aspects
N1  -  Includes bibliographical references
ER  -