Report of investigation
Dept. of Mineral Resources
by Louis S. Gardner
Dept. of Mineral Resources 1967 Report of investigation no. 13
所蔵館1館
by Louis S. Gardner, Howard F. Haworth, and Pongpan Na Chiangmai
Dept. of Mineral Resources 1967 Report of investigation no. 11
Dept. of Mineral Resources 1967 Report of investigation no. 9
by Dwight E. Ward and Din Bunnag
Dept. of Mineral Resources 1964 Report of investigation no. 6
