@article{015570241,
title = "Economic and other considerations governing decisions on the advisability of incorporating additional and new sources of protein and non protein nitrogen into the diets of dairy cattle the case of urea nitrogen for lactating dairy cows",
author = "Moller, P. and Neimann-Sorensen, A.",
year = "1977",
journal = "Protein and Non protein Nitrogen for Ruminants Proceedings of the Symposium",
pages = "d 33-50",
url = "https://eurekamag.com/research/015/570/015570241.php"
}