000 00235nam a22000857a 4500
008 210303b ||||| |||| 00| 0 eng d
050 _aQC721
245 _a The quark model
_cKOKKEDEE, J.J.J.
942 _2lcc
_hQC721 .K65 1969
999 _c1347
_d1347