by Scott, Gregory J | Wiersema, Siert G | Ferguson, Princess I | Herrera, Jose E | International Potato Center | International Institute of Tropical Agriculture.
by Kasasian, L. (Levon) | Centre for Overseas Pest Research (Great Britain).
College of Natural Resources, Royal University of Bhutan | © Office: +975 02 376247 (Ext. 2004), E-mail: library.cnr@rub.edu.bt