Hossain, MS, MA Rahman, FY Bari, and MMU Bhuiyan. 2022. “Factors Affecting Calving to Service Interval in Crossbred Friesian Cows in a Large Dairy Farm”. Bangladesh Veterinarian 38 (1-2):33-41. https://doi.org/10.3329/bvet.v38i1-2.63675.