共 2 条
- [1] EDGE-PERFORATED CARD FOR HIGH-ECONOMY INDIVIDUAL ANIMAL DOCUMENTATION - USE IN FERTILITY PROGRAMS ON DAIRY-CATTLE AND HEIFER RAISING UNITS MONATSHEFTE FUR VETERINARMEDIZIN, 1979, 34 (17): : 647 - 650
- [2] CONTROL OF ENZOOTIC BOVINE LEUCOSIS IN DAIRY-CATTLE UNITS WITH HIGH ANIMAL CONCENTRATION MONATSHEFTE FUR VETERINARMEDIZIN, 1989, 44 (18): : 625 - 628