00295nam a2200121 a 450000500170000008200170001710000060003424500270004025000130006726000380008030000280011863000270014620251203091302.0  a370.321bWOR  d_  aWorld of learning 1989  a39th ed.  aLondonbEuropa Publicationsc1989  axv, 1988 p.c22 cm.bHB  aWorld of learning 1989