00453nam a22001457a 4500008004100000020001500041050002000056100002400076245004000100250001200140260003800152300007700190650002100267700001900288150925b        xxu||||| |||| 00| 0 eng d  a0393974774  aGN 281.B66 2000  aBoyd, Robert.d2000  aHow humans evolved:c Robert, Boyd.  a2nd ed.  aLondon:bNorton & company,c2000.  axxiii, 652(42) p. : ill.bIncludes bibliographical references and index.  aHuman evolution.  aSilk, Joan B.