000 00351nam a2200157Ia 4500
020 _a9780435178765
040 _cPK-LaCSN
082 _a510
_bEXT
100 _aBlair t john
245 0 _aExtension textbook 6
260 _c1995
_bheinemann
_a[NA]
300 _a30
942 _cTB
999 _c837717
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