Chalit Mahattana-art. 1992. Bioinsecticide formulation of nuclear polyhydrosis virus of the American bollworm, Heliothis armigera (Hubner). Graduate School, Kasetsart University;

Chalit Mahattana-art. Bioinsecticide formulation of nuclear polyhydrosis virus of the American bollworm, Heliothis armigera (Hubner). . Bangkok:Kasetsart University, 1992.

Chalit Mahattana-art. (1992) Bioinsecticide formulation of nuclear polyhydrosis virus of the American bollworm, Heliothis armigera (Hubner) . Kasetsart University/Bangkok.