01427nam a22003374a 4500001001200000003000800012006001900020007001500039008004100054010001700095020002800112040002100140035002100161050002500182082001600207245017700223260007000400300002400470504004100494533015200535650002700687650002700714650002200741650005400763650003100817655002900848700004800877700002100925710001700946856012600963ebr10173518CaPaEBRm        u        cr cn|||||||||020715s2003    enka    sb    000 0 eng    z  2002011122  z0851995497 (alk. paper)  aCaPaEBRcCaPaEBR  a(OCoLC)22817171114aSB185.7b.C76 2003eb04a631.5/222100aCrop variety improvement and its effect on productivityh[electronic resource] :bthe impact of international agricultural research /cedited by R.E. Evenson and D. Gollin.  aWallingford, Oxon, UK ;aCambridge, MA, USA :bCABI Pub.,cc2003.  axxv, 522 p. :bill.  aIncludes bibliographical references.  aElectronic reproduction.bPalo Alto, Calif. :cebrary,d2013.nAvailable via World Wide Web.nAccess may be limited to ebrary affiliated libraries. 0aField cropsxBreeding. 0aField cropsxGenetics. 0aCrop improvement. 0aAgriculturexResearchxInternational cooperation. 0aAgricultural productivity. 7aElectronic books.2local1 aEvenson, Robert E.q(Robert Eugene),d1934-1 aGollin, Douglas.2 aebrary, Inc.40uhttp://site.ebrary.com/lib/rucke/Doc?id=10173518zAn electronic book accessible through the World Wide Web; click to view