00280nam a2200109Ia 450000500170000000800410001708200120005810000160007024500350008626000410012130000080016220260225050905.0260224s9999||||xx |||||||||||||| ||und||  a592 DUN  aL. C. Dunn  0aPrinciples of animal taxonomy   aNew York: Columbia Uni. Press c1969  a247