00320nam a2200097 a 450000500170000000800410001705000220005824500370008050000880011765000170020520140414093834.0030610s19uu    xx            00    eng d  aCDR 050bNAT 1997  aNational geographic :bthe '30s.  a3 CD's inside January 1930-April 1933/May 1933-August 1936/Sept. 1936-December 1939  aPeriodicals.