00351nam a2200133 a 450000500170000008200150001710000170003210000210004924500310007026000450010130000230014663000240016963000240019320251203091255.0  a639.9bFRA  aFrankel, O.H  aMichael, E Soule  aConservation and Evolution  aLondonbCambridge University Pressc1981  a340 p.b22 cm.cHB  aNature conservation  aEcological genetics