@INPROCEEDINGS {THOTTAPPILLY:1999b, title = {Supply of pest free stock}, author = {Thottappilly, G. and Ng, S. Y. C. and Winter, S. }, booktitle = {Abstracts of the XIVth International Plant Protection Congress (IPPC), Jerusalem, Israel, 25-30 July 1999}, year = {1999}, pages = {86}, }