Activities of the International Dairy Federation - The results of the studies on the application of hormon somatotropin in relation to dairy cattle - Ing Maria Wielgosz
RU
Iz rabot Mezhdunarodnojj Molochnojj Federacii - Rezultaty issledovanijj kasajushhikhsja primenenija gormona somatotropina dlja molochnogo skota- inzhener Marija Velgosh