![](/img/cover-not-exists.png)
Detection of difficult calvings in the Polish Holstein-Friesian Black-and-White heifers
Zaborski, Daniel, Grzesiak, Wilhelm, Pilarczyk, RenataLanguage:
english
Journal:
Journal of Applied Animal Research
DOI:
10.1080/09712119.2014.987293
Date:
December, 2014
File:
PDF, 235 KB
english, 2014