En extinción : animales extinguidos y amenazados de la provincia de Santa Fe-Argentina, aves y mamíferos / by De la Peña, Martín Rodolfo, 1941-

“…Fundación Habitat Desarrollo,…”

Guidelines for the integration of wildlife and habitat evaluations with ecological land survey /

“…Wildlife Habitat Canada,…”

Priority migratory bird habilitats of Canada's prairie provinces /

“…Habitat Conservation Section, Canadian Wildlife Service, Conservation and Protection, Western and Northern Region, Environment Canada,…”