Srisurang Tantimavanich. (1997) Cloning of chitinase gene from Bacillus licheniformis TP-1 in Bacillus thuringiensis subsp. Aizawai and study of its effect towards spodoptera exigua. Mahidol University,:ม.ป.ท.Srisurang Tantimavanich. 1997. Cloning of chitinase gene from Bacillus licheniformis TP-1 in Bacillus thuringiensis subsp. Aizawai and study of its effect towards spodoptera exigua. ม.ป.ท.:Mahidol University,;Srisurang Tantimavanich. Cloning of chitinase gene from Bacillus licheniformis TP-1 in Bacillus thuringiensis subsp. Aizawai and study of its effect towards spodoptera exigua. ม.ป.ท.:Mahidol University, 1997. Print.