Initial reports of Deep Sea Drilling Project. Project planned and carried out with advice of Joint Oceanographic Institutions for Deep Earth Sampling (JOIDES). v. 15. Covering leg 15 of cruises of drilling vessel Glomar Challenger, San Juan, Puerto Rico to Cristobal, Panama, Dec. 1970-Feb. 1971 [with lists of references; by] N. Terence Edgar, Ansis G. Kaneps [and] James R. Herring.

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