TY  - BOOK
AU  - Green, D.A.
TI  - Ethiopia: an economic analysis of technological change in four agricultural production systems 
AV  - HD2146 .E93
PY  - 1974///
CY  - East Lansing
PB  - Michigan University
KW  - Agriculture
KW  - Economic aspects
KW  - Ethiopia
KW  - Technological innovations
ER  -