Yorwapa Boonpooh. 1990. Tetracyclines in animal feeds : analytical methods and stability test. Bangkok:Mahidol University;
Yorwapa Boonpooh. (1990) Tetracyclines in animal feeds : analytical methods and stability test (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Yorwapa Boonpooh. Tetracyclines in animal feeds : analytical methods and stability test. Bangkok:Mahidol University, 1990.
Yorwapa Boonpooh. (1990) Tetracyclines in animal feeds : analytical methods and stability test (รายงานผลงานวิจัย). Mahidol University:Bangkok.