Food habits of some winter bird visitants
Gorde:
| Egile nagusia: | |
|---|---|
| Erakunde egilea: | |
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Washington :
United States Department of Agriculture,
1924.
|
| Saila: | Department bulletin ;
no. 1249 |
| Etiketak: |
Etiketa erantsi
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|
| Erakundea: | Library of the Academy of Sciences of the Czech Republic |
| All Items of this Institution: | all items available from Library of the Academy of Sciences of the Czech Republic |
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Etiketa erantsi 
Food habits of the swallows, a family of valuable native birds Food habits of the swallows, a family of valuable native birds /