Noppadol Thapphan. 1992. application of neem seed extracts in the controlling of insect pests of Chinese Kale on farmer's fieldNoppadol Thapphan. Graduate School, Kasetsart University;
Noppadol Thapphan. (1992) application of neem seed extracts in the controlling of insect pests of Chinese Kale on farmer's fieldNoppadol Thapphan . Kasetsart University/Bangkok.
Noppadol Thapphan. application of neem seed extracts in the controlling of insect pests of Chinese Kale on farmer's fieldNoppadol Thapphan. . Bangkok:Kasetsart University, 1992.
Noppadol Thapphan. (1992) application of neem seed extracts in the controlling of insect pests of Chinese Kale on farmer's fieldNoppadol Thapphan . Kasetsart University/Bangkok.