00315nam a2200121 a 450000500170000008200130001710000220003024500440005226000500009630000220014663000120016863000130018020251202164141.0  a503bYEA  aCalhoun, Davidd_  a1986 yearbook of science and the future  aChicagobEncyclopaedia Britannica, Inc.c1986  a448p.b24 cm.cHB  aScience  aYearbook