Davies, Thomas A. (ed.) (1972): Initial Reports of the Deep Sea Drilling Project covering Leg 12 of the cruises of the drilling vessel Glomar Challenger, Boston, Massachusetts to Lisbon, Portugal, June-August 1970. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, Initial Reports of the Deep Sea Drilling Project, 12, 1243 pp., georefid:1972-085122