Warme, John E.; Kennedy, W. James; Schneidermann, Nahum (1973): Biogenic sedimentary structures (trace fossils) in Leg 15 cores. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Edgar, N. Terence, Saunders, John B., Bolli, Hans M., Boyce, Robert E., Broecker, Wallace S., Donnelly, Thomas W., Gieskes, Joris M., Hay, William W., Horowitz, Ross M., Maurrasse, Florentin, Perez Nieto, Hernan, Prell, Warren, Premoli Silva, Isabella, Riedel, William R., Schneidermann, Nahum, Waterman, Lee S., Kaneps, Ansis G. (editor), Herring, James R. (editor), Initial reports of the Deep Sea Drilling Project, covering Leg 15 of the cruises of the drilling vessel Glomar Challenger, San Juan, Puerto Rico to Cristobal, Panama; December 1970-February 1971, 15, 813-831, georefid:1983-010603