00670cam a2200193 4500 102602888 TxAuBib 20120214120000.0 990827s1996||||||||||||||||||||||||und|u TxAuBib Badyaev, Alexander V. White-Wagtail #236 & Black-Backed Wagtail #237-Birds of N.A. Birds of N.A., 1996. 19990827. Wagtail-White-Birds of N.A.-#236. Wagtail-Black-Backed-Birds of N.A.-#237. Birds of N.A.-White Wagtail-#236. Birds of N.A.-Black-Backed Wagtail-#237.