共 50 条
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- [6] ULTRASONIC ECHOGRAPHY FOR EARLY-PREGNANCY DIAGNOSIS IN SOWS ANNALES DE ZOOTECHNIE, 1984, 33 (03): : 402 - 402
- [9] PREGNANCY DIAGNOSIS IN SOWS BY ULTRASONIC-DETECTION ARQUIVOS DA ESCOLA DE VETERINARIA DA UNIVERSIDADE FEDERAL DE MINAS GERAIS, 1981, 33 (01): : 177 - 181
- [10] EARLY-PREGNANCY DIAGNOSIS WITH A BATTERY-OPERATED ULTRASONIC SCANNER IN SOWS CANADIAN VETERINARY JOURNAL-REVUE VETERINAIRE CANADIENNE, 1992, 33 (05): : 340 - 342