00433nam a2200145 a 450000500170000000800410001704100080005808200080006610000330007424500690010726400540017630000110023065000280024165000180026920260717090929.0260717s1976    ii            000 0 eng d  aeng04a0321 aEnclyclopardia Britanica INC10aBritannica book of the year 1976 /cEnclyclopardia Britanica INC 1aChicago :bEncyclopædia Britannica, Inc.,c1976.  a767 p. 4aEncyclopaedia britanica 4aYearbook 1976