©2013 National Research Council of Thailand
Khamawat Siritheerasas. 1999. Biostratigraphy of permian rocks at Khao Nong Hoi, Changwat Nakhon Ratchasima, with reference to fossil ammonoids and fusulinids in rock strata. Department of Geology, Chulalongkorn University;
Khamawat Siritheerasas. (1999) Biostratigraphy of permian rocks at Khao Nong Hoi, Changwat Nakhon Ratchasima, with reference to fossil ammonoids and fusulinids in rock strata . Chulalongkorn University/Bangkok.
Khamawat Siritheerasas. Biostratigraphy of permian rocks at Khao Nong Hoi, Changwat Nakhon Ratchasima, with reference to fossil ammonoids and fusulinids in rock strata. . Bangkok:Chulalongkorn University, 1999.
Khamawat Siritheerasas. (1999) Biostratigraphy of permian rocks at Khao Nong Hoi, Changwat Nakhon Ratchasima, with reference to fossil ammonoids and fusulinids in rock strata . Chulalongkorn University/Bangkok.