00315nam a2200133 a 4500008004100000020001500041050001400056100001600070245002200086246001400108260003000122300002000152350000900172120416s1970    ||||||||||||||||| ||    u  a0719520649  aQC 23 Dun  aDuncan, Tom10aExploring physics  abook five  aLondonbJohn Murrayc1970  avi, 218p. : ill  a0.00