In his review of Ahlfeld’s “Geologia de Bolivia,” Norman D. Newell3 uses unaccurate statements which call for clarification and correction.

The sources of Oppenheim’s Generalized Geologic Map of Bolivia, published by the Sociedad Geologica del Peru in 1944 and accompanying the memoir entitled “Mapa Geologico Generalizado de Bolivia y Memoria Explicativa”4 are amply stated in the Introduction of the foregoing paper. Credits are given to whom ever due and references are made to a bibliography of 177 titles. The official sources and Ahlfeld’s collaboration are acknowledged for western Bolivia. The greatest part of eastern Bolivia was reconnoitered by...

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First page of Geologia de Bolivia, by F. Ahlfeld<xref ref-type="fn" rid="fn1"><sup>1</sup></xref> DISCUSSION
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