000 00382nam a22001337a 4500
082 _a604.2
_bWIL
_cL-12, P-55
100 _aWilliamson, George
_949639
245 _aTechnical drawing in 20 steps
_cWilliamson, George
260 _aLondon
_bCassell and Co ltd
300 _a92p.:
_bill,;
_c15 cm.
526 _a0
_b0
_c0
_d604_200000000000000_WIL
650 _aMCE
_9379
942 _2ddc
_cBK
999 _c552427
_d552427