000 00422nam a22001577a 4500
008 230426b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _a530.145
_bK8
100 _aSen, D K
245 _aFields and or particles
260 _aToronto:
_bThe Ryerson Press,
_c1968
300 _ax, 139p.
650 _aFields
653 _aParticles
942 _2udc
_cBK
999 _c23731
_d23731