Chawanee Sirichaiwat. 1996. A study of preparation of controlled release urea fertilizer by using natural rubber latex. Faculty of Graduate Studies, Mahidol University;
Chawanee Sirichaiwat. (1996) A study of preparation of controlled release urea fertilizer by using natural rubber latex . Mahidol University/Bangkok.
Chawanee Sirichaiwat. A study of preparation of controlled release urea fertilizer by using natural rubber latex. . Bangkok:Mahidol University, 1996.
Chawanee Sirichaiwat. (1996) A study of preparation of controlled release urea fertilizer by using natural rubber latex . Mahidol University/Bangkok.