@PROCEEDINGS {TERRY:1978b, title = {Vegetatively-borne Root Crops Pathogens and Techniques for Their Elimination}, author = {Terry, E. R. }, booktitle = {Paper presented at the International Symposium on Diseases of Tropical Root Crops, September 4 - 8, 1978}, year = {1978}, month = {September}, address = {Louvain-la-Nouve, Belgium}, }