000 00293nam a2200109Ia 45e0
008 181001s1969 xx 000 0 und d
100 _aWalraven C.V.
245 0 _aWorking with slide Rule
260 _aBombay
_bI.B.H.
_c1969
300 _a39
942 _2ddc
_cBK
999 _c1764
_d1764