National Audubon society field guide: North American Butterflies, North American Insects & Spiders, North American Birds (Western Region), North American Birds (Eastern Region), North American Mammals, African Wildlife, North American Reptiles & AmphibiansKolektív autorovVypredanáPostrážiť
Checklist of the Trematodes (Digenea) of Birds of the Czech and Slovak RepublicsTomáš ScholzVypredanáPostrážiť
