Proceedings
Cock, J.
Proceedings edited J. Cock - Colombia International Society for Tropical Root Crops 1977 - 277 p.
Root Crops
633.4(213)(063) / C 664 P
Proceedings edited J. Cock - Colombia International Society for Tropical Root Crops 1977 - 277 p.
Root Crops
633.4(213)(063) / C 664 P