21st Century Astronomy text New York W.W.Norton 2007 2nd ed. N xxxv, 641 hlm. 28 cm by Jeff Hester, [et.al] ASTRONOMY 520 520 Twe 978-0-393-92443-5 INLIS000000000000039 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)