Reference : 6850.20,6850.19,6850.21,6850.22,6850.23,6850.24

Name of creator(s) : Keyes, Charles F.

Scope and content : Amphoe Mae Sariang, Changwat Mae Hong Son, Thailand,east=97.770568; north=18.264741

Extent and medium : Slide ดูเอกสารต้นฉบับ