1. Palynology of the upper Campanian (Cretaceous) Judith River Formation, north-central Montana Author/Creator: Tschudy, Bernadine D., author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1973 Resource Type: Book Access & Availability: Loading
2. Palynology of the upper Campanian (Cretaceous) Judith River Formation, north-central Montana, Author/Creator: Tschudy, Bernadine D. Publication/Creation: Washington : U.S. Govt. Print. Off, 1973 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 768-772. Access & Availability: Loading