@PROCEEDINGS {HILL:1987, title = {Most probable numbers of nitrogen-fixing bacteria associated with sweet potato roots}, author = {Hill, W. A. and Hahn, S. K. and Mulongoy, K. }, booktitle = {In: Tropical Root Crops: Root Crops and the African Food Crisis; Proceedings of the Third Triennial Symposium of the International Society for Tropical Root Crops}, year = {1987}, volume = {p. 80}, publisher = {IDRC}, address = {Ottawa}, note = {RTB; Root and Tuber; Sweetpotato}, Abstracts only, }