The Roebling Apatite, Pulsifer Quarry, Androscoggin County, MaineDOI: info:10.1080/00357529.2022.1989946v. 97No. 18–11
Wise, Michael A. and Post, Jeffrey E. 2022. "The Roebling Apatite, Pulsifer Quarry, Androscoggin County, Maine." Rocks & Minerals, 97, (1) 8–11. https://doi.org/10.1080/00357529.2022.1989946.