TY  - BOOK
AU  - Cock, James (ed.)
AU  - Macintyre, Reginald (ed.)
AU  - Graham, Michael (ed.)
TI  - Proceedings of the Fourth Symposium of the Interanational Society for Tropical Root Crops
SN  - 0889361150
PY  - 1977///
CY  - Box 8500, Ottawa, Canada K1G 3H9
PB  - International Development Research Center
ER  -