00285nam a2200121 a 450000500170000008200160001710000210003324500340005425000080008826000360009630000140013270000170014620251203090612.0 a503,bUVA/R aUVAROV, E.B. AND aPENGUIN DICTIONARY OF SCIENCE a6TH aENGLANew DelhibELBS/PENGUINc0 a468, 21CM aISAACS, ALAN