Pornpol Romayanukool. (1989) Manufacturing and improvement of green coffee. Mahidol University,:ม.ป.ท. 10.14457/MU.the.1989.203
Pornpol Romayanukool. 1989. Manufacturing and improvement of green coffee. ม.ป.ท.:Mahidol University,; 10.14457/MU.the.1989.203
Pornpol Romayanukool. Manufacturing and improvement of green coffee. ม.ป.ท.:Mahidol University, 1989. Print. 10.14457/MU.the.1989.203