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2. Preliminary Fertility Results with Frozen Semen;Bratton;J. Dairy Sci.,1955
3. Field Trials with Frozen Semen;Dunn,1953
4. A Comparison of Fertility of Bovine Spermatozoa Stored at 5° C. and −79° C;Dunn;J. Dairy Sci.,1954
5. Laboratory and Field Studies with Frozen Semen;Dunn;J. Animal Sci.,1953