000 00410nam a2200157 4500
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082 0 0 _a744. hea
100 1 _a"heard, w e. "
_911330
245 1 0 _atechnical drawing:an approach to cse:
_b/
_c w.e. heard
250 _a1 ed.
260 _auk :
_bmacmillan
_c1972.
300 _a", 96p.;
_c25 cm."
942 _2ddc
_cBK
999 _c24103
_d24103