Salt-Range Fossils. 4, Geological results : 2 (1891) Wilhelm Heinrich Waagen Published: 1889 Total Pages: 298 Get eBook
Salt-range Fossils: Productus limestone fossils. (Text and atlas of plates) 1879-87 Wilhelm Heinrich Waagen Published: 1887 Total Pages: 138 Get eBook
The Permian Fossils of the Productus Shales of Kumaon and Gurhwal Carl Diener Published: 1897 Total Pages: 82 Get eBook
