Upatham Pengpara. (1990) Studies on formation and regeneration of Agaricus bitorquis protoplast. Mahidol University,:ม.ป.ท.Upatham Pengpara. 1990. Studies on formation and regeneration of Agaricus bitorquis protoplast. ม.ป.ท.:Mahidol University,;Upatham Pengpara. Studies on formation and regeneration of Agaricus bitorquis protoplast. ม.ป.ท.:Mahidol University, 1990. Print.