Jarupan Chunuang และ Suvaluck Satumanatpan. (2011) Effects of earthworm polypheretima elongata on physical and chemical properties of saline soil in abandoned shrimp farm. Mahidol University:ม.ป.ท.Jarupan Chunuang และ Suvaluck Satumanatpan. 2011. Effects of earthworm polypheretima elongata on physical and chemical properties of saline soil in abandoned shrimp farm. ม.ป.ท.:Mahidol University;Jarupan Chunuang และ Suvaluck Satumanatpan. Effects of earthworm polypheretima elongata on physical and chemical properties of saline soil in abandoned shrimp farm. ม.ป.ท.:Mahidol University, 2011. Print.