Ten Acres and a Dream
How to Feed Your Laying Hens, by James Hermes
How to Feed Your Laying Hens, by James Hermes. PNW 477, September 2016. A Pacific Northwest Extension Publication, Oregon State, University of Idaho, Washington State University.
Haga clic en el enlace https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/pnw477.pdf para abrir la URL.