A manual of the mosses of western Pennsylvania Jennings, Otto E. (Otto Emery), 1877-1964 creator text book Pittsburgh The author, Press of the City Mission Pub. Co [c1913] 1913
print
ENG Plates printed on both sides. Mosses Pennsylvania QK541 .J4 https://www.biodiversitylibrary.org/bibliography/1662 2409784 13014759 10.5962/bhl.title.1662 DLC