@article{029562917,
title = "Zinc iron copper level in rir fertile and infertile eggs",
author = "Szymkiewicz, M. and Niemiec, J.",
year = "1988",
journal = "Poultry Science",
volume = "67",
number = "Suppl 1",
pages = "163",
issn = "0032-5791",
url = "https://eurekamag.com/research/029/562/029562917.php"
}