00314nam a2200133Ia 4500020001800000082001000018100003300028245003600061250000800097260004600105300000800151500000800159650001300167  a0-632-02608-1  a575.1  aOld, R. W. / Primrose, S. B. 0aPrincipals of Gene Manipulation  a4th  aLondonbBlackwell Scientific Publications  a438  a550  aGenetics