Thitiporn Tanunchai. (1999) A study of y-radiation vulcanised natural rubber and skim latices for encapsulation of urea fertiliser. Mahidol University,:ม.ป.ท.Thitiporn Tanunchai. 1999. A study of y-radiation vulcanised natural rubber and skim latices for encapsulation of urea fertiliser. ม.ป.ท.:Mahidol University,;Thitiporn Tanunchai. A study of y-radiation vulcanised natural rubber and skim latices for encapsulation of urea fertiliser. ม.ป.ท.:Mahidol University, 1999. Print.