00267nam a2200121   4500007000400000008000400004040000900008050001700017100001700034245003200051260004200083300002000125000000  aUOEL  aQC171.2b.R3  aRajam, J. B.  aAtomic physicscJ. B. Rajam  aNew Delhi.bS. Chand & Company,c1950  avii, 1279 p. :