00876cam a22002531 4500 gs 58000075 DLC 20260227111406.0 720222s1957 xx 000 0 eng gs 58000075 (OCoLC)245703 DLC OAkU DLC premarc QE185 .A43 no. 42 Fritz, Madeleine A. (Madeleine Alberta), 1896- Bryozoa (mainly Trepostomata) from the Ottawa formation (Middle Ordovician) of the Ottawa-St. Lawrence lowland. Ottawa, E. Cloutier, Queen's printer, 1957. v, 75 p. 30 plates, table. Geological Survey of Canada. Bulletin 42 "Selected bibliography": p. 41. Bryozoa, Fossil. Paleontology Canada Ottawa-St. Lawrence lowland. Paleontology Ordovician. 29220 29220