The calendar of Tiahuanaco. A disquisition on the time measuring system of the oldest civilization in the world. [A study of the carved symbols on the prehistoric gateway at Tiahuanaco, Bolivia. With plates and a bibliography.]
Bellamy, Hans Schindler.
Allan, Peter,Chronologist.
London, 
1956.
Joint authors: Hans Schindler Bellamy and Peter Allan, Chronologist.