Author Details for "Duncan, Helen"
| Title | Author(s) | Publication | Year | Online Access |
|---|---|---|---|---|
| Phylum Coelenterata, Class Anthozoa, pp. 64-67, <In>, Mudge, M.R.; and Yochelson, E.L.; Stratigraphy and paleontology of the uppermost Pennsylvanian and lowermost Permian rocks in Kansas | Duncan, Helen | U.S. Geological Survey, Professional Paper no. 323, 213 pages | 1962 | N/A |