TY  - BOOK
AU  - Alston, Julian M
AU  - Pardey, Philip G
AU  - Norton, George W
TI  - Science under scarcity: Principles and practice for agricult
SN  - 0-8014-2937-4
U1  - 338.1072/ALS  
PY  - 1995///
CY  - Ithaca
PB  - Cornell Uni Pr
KW  - Agriculture--Research--Cost effectiveness
KW  - Agriculture--Research--Evaluation
ER  -