00583nam 2200193 450 2087979http://id.bnportugal.gov.pt/bib/porbase/20879790-03-006228-4ESEL_BC_121.iso/07-01-2009/1570919981123d1998 m y0pory0103 baengUSIntroductory astronomy & astrophysicsMichael Zeilik, Stephen A. Gregory4th. edFort WorthSaunders College1998515, [50] p.il.30 cm52medfreZeilikMichaelGregoryStephen070PTESELRPC