00273nam a2200109 a 4500008004100000050001500041100001900056245003100075260003200106300001600138350000900154120416s1963    ||||||||||||||||| ||    u  aQC 173 Bei  aBeiser, Arthur10aConcepts of modern physics  aNew YorkbMcGraw-Hillc1963  a357p. : ill  a0.00