00563nam a22002057a 450000500170000001000110001702000100002803500110003803700160004904000120006508200160007710000210009324500810011426000500019527000130024530000260025850000200028465000260030465000270033020170124110218.0  a431655B c00.00  a431655  bCen Lib/Ret  aDPLbEN  a016.73bDOW  aDowns, Robert B.  aAmerican library resources :cby Robert B. Downs ba bibliographical guide /  aChicago bAmerican Library Association c1962  bChicago   aviii, 226p.c25cm(Hb)  aIncludes index   aReferences resources   aBibliographical guide