Tippawan Kowitteerawut. 1997. A study of structure-properties of purified natural rubber. , Mahidol University;
Tippawan Kowitteerawut. (1997) A study of structure-properties of purified natural rubber . Mahidol University/Bangkok.
Tippawan Kowitteerawut. A study of structure-properties of purified natural rubber. . Bangkok:Mahidol University, 1997.
Tippawan Kowitteerawut. (1997) A study of structure-properties of purified natural rubber . Mahidol University/Bangkok.