00250nam a22000977a 4500008004100000050002200041100001800063245003100081260003000112300001000142160811b        xxu||||| |||| 00| 0 eng d  aQ 161.2 .S25 2011  aScienced2014  aScience:bearth and space.  aUSA:bA Beka book,c2014.  a439P.