Southeastern Geology. Special Publication Number 4 (February 1973). Bibliography and Catalogue (1900-1969) of the Trepostomata (Phylum Ectoprocta).
Softcover, Durham, N. C. Duke University, 1973. Very Good with No dust jacket as issued.
Softcover, Durham, N. C. Duke University, 1973. Very Good with No dust jacket as issued.