The kingdom of Sikkim / 
Karan, Pradyumna P.(Pradyumna Prasad)
Queen, James E.
Zang, Eugene E.
Washington, D.C. :  Association of American Geographers, 
1969.
Explanation.
Glossary.
Insets: Gangtok; Index map showing location of Sikkim; Reliability Diagram.
Map supplement no. 10, Annals of A.A.G., vol. 59, no. 1.