23 transparencies of geologic maps and figures of Trinidad.
Numbered 1-23 to Kugler, Hans G. (1996). Treatise on the
Geology of Trinidad. Part 3 - Detailed geological Maps and sections.
Edited by Hans M. Bolli and John B. Saunders. Published by the
Natural History Museum Basel. Map No. 1 is the key map to individual
detailed geologic maps.