 ผลงานตีพิมพ์ในวารสารวิชาการApplication of GnRH administration at post artificial insemination in synchronized estrus heifer and dairy cows by PGF2ฮฑ induction on conception rate in phupan dairy co-operative, Sakol-Nakon Province, Thailandผู้แต่ง: Umpapol, H.,  Mr.Chanvit Vajrabukka, Professor , Jitrajug, T., Songvicha, C., Tainglum, S., Sirikul, W., วารสาร: 
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