TY  - BOOK
AU  - Crawford,Eric W.
TI  - A programming-simulation study of constraints affecting teh long-run income-earning ability of traditional dryland farming systems in Northern Nigeria
PY  - 1980///
CY  - Ann Arbor, Mich.
PB  - University Microfilms International
KW  - Farms, Small
KW  - Nigeria, Northern
KW  - Farm income
KW  - Dry farming
N1  - Thesis (Ph.D.)-Cornell University, 1980
ER  -