Somsak Chamnanthongpaivanh. 1981. A prefeasibility study on an ammonia plant utilising natural gas as raw material. Department of Chemical Engineering, Chulalongkorn University;
Somsak Chamnanthongpaivanh. (1981) A prefeasibility study on an ammonia plant utilising natural gas as raw material . Chulalongkorn University/Bangkok.
Somsak Chamnanthongpaivanh. A prefeasibility study on an ammonia plant utilising natural gas as raw material. . Bangkok:Chulalongkorn University, 1981.
Somsak Chamnanthongpaivanh. (1981) A prefeasibility study on an ammonia plant utilising natural gas as raw material . Chulalongkorn University/Bangkok.