Boonerb Khettsakorn. (1989) Pulmonary function in smokers. Mahidol University,:ม.ป.ท. 10.14457/MU.the.1989.183
Boonerb Khettsakorn. 1989. Pulmonary function in smokers. ม.ป.ท.:Mahidol University,; 10.14457/MU.the.1989.183
Boonerb Khettsakorn. Pulmonary function in smokers. ม.ป.ท.:Mahidol University, 1989. Print. 10.14457/MU.the.1989.183