TY - JOUR A1 - Schweigert, Florian J. A1 - Gottwald, C. T1 - Effect of parturition on levels of vitamins A and E and of ß-carotene in plasma and milk of mares Y1 - 1999 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/21668 ER -