@inbook{f2c4a718b00e4cce83994cd9fcf5e1c2,
title = "Vocal expressions of density, group size and welfare in laying hens",
author = "P. Koene and H. Nijland and \{de Heer\}, R.",
year = "2006",
language = "English",
pages = "95",
booktitle = "Proceedings of the 40th International Congress of the ISAE, International Society for Applied Ethology, Bristol, England, 8-12 August 2006",
note = "40th International Congress of the ISAE, International Society for Applied Ethology, Bristol, England ; Conference date: 08-08-2006 Through 12-08-2006",
}