(2005). The effect of open days on production performance of the first and second lactation period of Holstein dairy cattle in a large herd. , 18(4), 97-99.

. "The effect of open days on production performance of the first and second lactation period of Holstein dairy cattle in a large herd". , 18, 4, 2005, 97-99.

(2005). 'The effect of open days on production performance of the first and second lactation period of Holstein dairy cattle in a large herd', , 18(4), pp. 97-99.

The effect of open days on production performance of the first and second lactation period of Holstein dairy cattle in a large herd. , 2005; 18(4): 97-99.