Piyaporn Waranusantigul. 2001. Treatment of heavy metals [nickel and lead] and biosorption of basic dye [methylene blue] by using giant duckweed [Spirodela polyrrhiza (L.) Schleid.]. Field of Study Environmental Biology, Mahidol University;

Piyaporn Waranusantigul. Treatment of heavy metals [nickel and lead] and biosorption of basic dye [methylene blue] by using giant duckweed [Spirodela polyrrhiza (L.) Schleid.]. . Bangkok:Mahidol University, 2001.

Piyaporn Waranusantigul. (2001) Treatment of heavy metals [nickel and lead] and biosorption of basic dye [methylene blue] by using giant duckweed [Spirodela polyrrhiza (L.) Schleid.] . Mahidol University/Bangkok.