Kawinharn Palaharn. 1996. Effects of some plant extracts on the beet armyworm, spodoptera exigua (Hubner.). Graduate School, Kasetsart University;
Kawinharn Palaharn. (1996) Effects of some plant extracts on the beet armyworm, spodoptera exigua (Hubner.) . Kasetsart University/Bangkok.
Kawinharn Palaharn. Effects of some plant extracts on the beet armyworm, spodoptera exigua (Hubner.). . Bangkok:Kasetsart University, 1996.
Kawinharn Palaharn. (1996) Effects of some plant extracts on the beet armyworm, spodoptera exigua (Hubner.) . Kasetsart University/Bangkok.