00249nam a2200109Ia 4500008004100000041000700041082000800048100001600056245001900072260003300091300001500124180611s9999||||xx |||||||||||||| ||und||  aen  a530  aLITTLER, W. 0aJunior Physics  aLondonbG. Bell & Sonsc1961  aviii, 382p