00487    a2200169   4500003000500000005001700005010001300022040000900035082001700044100002100061245008900082250002100171260004100192300002400233600002100257650003900278Nust20230504123513.0  a55011758  cNust  a629.8323,VAL  aVan Valkenburgh,  aBasic synchros and servomechanisms in Two parts /cVan Valkenburgh, Nooger & Neville  aPart.1 & Part.2   aJ.F.Rider PublisherbNew York,c1955  a111 pbilluse24 cm  aVan Valkenburgh,  aBasic synchros and servomechanisms