Wipawanee Kasemworaphoom. (1999) Cloning and expression of helper component-proteinase gene from papaya ringspot virus, Thai isolate. Mahidol University,:ม.ป.ท.Wipawanee Kasemworaphoom. 1999. Cloning and expression of helper component-proteinase gene from papaya ringspot virus, Thai isolate. ม.ป.ท.:Mahidol University,;Wipawanee Kasemworaphoom. Cloning and expression of helper component-proteinase gene from papaya ringspot virus, Thai isolate. ม.ป.ท.:Mahidol University, 1999. Print.