Indexes
- United States Departament of Agriculture (Waszyngton). Ofice of Publications 1
- United States Department of Agriculture 1
- United States Department of the Interior Fish and Wildlife Service 1
- United States Government Printing Office. 3
- United States Information Service. 1
- United States. Information Service (Manila) 1
- Universidad de Buenos Aires 1
- Universidad de Chile (Santiago, Chile) 1
- Universidad de Salamanca 1
- Universidad Nacional 1
- Universidad Nacional de La Plata 1
- Universidade do Parana 1
- Universit~:at Leipzig 1
- Universit~:at Rostock 24
- Universit~atsbibliothek Jena 1
- Universita Cattolica del Sacro Cuore 1
- Università Cattolica del Sacro Cuore 9
- Università Cattolica del Sacro Cuore (Milano) 8
- Università Cattolica del Sacro Cuore (Milano). Istituto di Storia Medioevale 1
- Universita degli Studi de Padova 1
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