00471nam a22001457a 4500008004100000020001800041040005500059080001600114245007400130260005400204300001000258650001900268653001800287700002000305230523b        |||||||| |||| 00| 0 eng d  a0-85229-294-5  aNational Science LibrarycNational Science Library  aR 030.1bK9  aBritannica: bBook of the year 1969c/ Encyclopeadia Britannica, Inc.  aChicago: bEncyclopeadia Britannica, Inc., c1969  a800p.  aReference work  aEncyclopeadia  aDell, W R (Ed.)