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F. Schneider and A. Bellmann and F. Becker and S. Bambang Poernomo and C. Rehfeldt and G. Nürnberg and W. Kanitz (2002) Gonadotropin release in periovulatory heifers after GnRH analogs measured by two types of immunoassays. Experimental and Clinical Endocrinology & Diabetes, 110 (5). pp. 235-244.

Suharjono, Dr., MS., Apt (2002) Obat Gosok Tak Baik Bagi Bayi Obat Gosok Tak Baik Bagi Bayi. Kumpulan Artikel Kesehatan Anak.