Unchalee Chawala. 1990. Gene transfer system in bacillus thuringiensis subsp. israelensis by conjugation-like process. Faculty of Graduate Studies, Mahidol University;
Unchalee Chawala. (1990) Gene transfer system in bacillus thuringiensis subsp. israelensis by conjugation-like process . Mahidol University/Bangkok.
Unchalee Chawala. Gene transfer system in bacillus thuringiensis subsp. israelensis by conjugation-like process. . Bangkok:Mahidol University, 1990.
Unchalee Chawala. (1990) Gene transfer system in bacillus thuringiensis subsp. israelensis by conjugation-like process . Mahidol University/Bangkok.