00521     2200205   4500001002100000008003900021035002000060245005200080250001200132260003300144300002600177020002200203084001200225082000800237650001400245990001400259990001400273990001400287990001400301INLIS000000000000039                                   N    a0010-0317000037  a21st Century Astronomycby Jeff Hester, [et.al]  a2nd ed.  aNew York :bW.W.Nortonc2007  axxxv, 641 hlm.c28 cm  a978-0-393-92443-5  a520 Twe  a520  aASTRONOMY  a011412112  a027413112  a027413112  a011412112