00383nam a22001457a 4500 510.28 PIC L-4, P-13 Pickworth, Charles N 39064 The slide rule C.N Pickworth 24th London Great Britain 126 P. : ill. ; 8 cm 0 0 0 510_280000000000000_PIC MCE 379 ddc BK 543632 543632 0 0 ddc 0 0 MCE MCE 2014-03-28 0 510.28 PIC MCE-29168 2014-03-28 2014-03-28 BK