@INPROCEEDINGS {PFEIFFER:1987,
title = {Traditional yam cropping inthe Sudan savanna of Cameroon},
author = {Pfeiffer, H. and Lyonga, S. N. },
booktitle = {Tropical Root Crops: Root Crops and the African Food Crisis: Proceedings of the Third Triennial Symposium of the International Society for Tropical Root Crops - Africa Branch},
year = {1987},
pages = {61p.},
publisher = {IDRC},
location = {Ottawa},
note = {RTB; Root and Tuber; Yam},
}