Natland, James H. (1980): Effect of axial magma chambers beneath spreading centers on the composition of basaltic rocks. Texas A & M University, Ocean Drilling Program, College Station, TX, United States, In: Powell, Robert (editor), Rosendahl, Bruce R., Hekinian, Roger, Briqueu, Louis, Dmitriev, Yuri, Fodor, Ronald V., Goll, Robert M., Hoffert, Michel, Humphris, Susan E., Mattey, David P., Natland, James H., Petersen, Nikolai, Roggenthen, William, Schrader, Edward L., Srivastava, Ramesh K., Warren, Nick, Barron, John A., Bukry, David, Lynts, George W., Leg 54 of the cruises of the drilling vessel Glomar Challenger; Cristobal, Panama Canal Zone to Long Beach, California; May-June 1977, 54, 833-852, georefid:1981-038751