©2013 National Research Council of Thailand
Ratri Khruathao. 2001. Upper succession of cenozoic sedimentary facies in the southern part of the Phrae basin northern Thailand. Field of Study Geology, Chulalongkorn University;
Ratri Khruathao. (2001) Upper succession of cenozoic sedimentary facies in the southern part of the Phrae basin northern Thailand . Chulalongkorn University/Bangkok.
Ratri Khruathao. Upper succession of cenozoic sedimentary facies in the southern part of the Phrae basin northern Thailand. . Bangkok:Chulalongkorn University, 2001.
Ratri Khruathao. (2001) Upper succession of cenozoic sedimentary facies in the southern part of the Phrae basin northern Thailand . Chulalongkorn University/Bangkok.