TY  - BOOK
AU  - Yudelman, Montague
TI  - Forty Years of Agricultural  Developmennt 
SN  - ISP guest lecture series no.4.
U1  - 630 YUD. 
PY  - 1986///
CY  - Viterbo
PB  -  ICIPE Science Press
KW  - Agriculture and Related Technologies
ER  -