Bryozoa of the Pacific coast of America

Pt. 3 "reports on the collections obtained by Allan Hancock Pacific Expeditions of Velero III off the coast of Mexico, Central America, South America, and Galapagos Islands in 1932, in 1933, in 1935, in 1936, in 1937, in 1938, in 1939, in 1940, and in 1941, and Velero IV in 1949-1952 off the the coast of Mexico and southern California" -- On cover.

AHFPUB03225AHFPUBPE1403AHFPUBPE1403225BryozoaRV Velero III CruiserRV Velero IV Cruiser