Principles of biology - Whaley, W. Gordon; Breland, Osmond P; Heimsch, Charles; Phelps, Austin; Schrank, A. R; Wyss, Orville; Airth, Robert L; Biesele, John J; Bold, Harold C; Jud, Burke, H; Long, Walter K; Spear, Irwin (Harper & Row, 1964)