[by] John A. Pople [and] David L. Beveridge. by John V. Noel and Edward L. Beach. by John B. Parker and John J. Clarke. by John A. Duffie and William A. Beckman. by John D. Roberts and Marjorie C. Caserio. by J. B. Poole and D. Doyle. by John V. N. Dorr and Francis L. Bosqui. by John H. Richards and James B. Hendrickson. by Charles J. Sippl and David A. Kidd. by John C. Slater and N. H. Frank.