Shrestha และผู้แต่งคนอื่นๆ. (1997) Motor vehicle emissions : a major cause of lead poisoning among public school children of Kathmandu Valley, Nepal. Chulalongkorn University:ม.ป.ท.Shrestha และผู้แต่งคนอื่นๆ. 1997. Motor vehicle emissions : a major cause of lead poisoning among public school children of Kathmandu Valley, Nepal. ม.ป.ท.:Chulalongkorn University;Shrestha และผู้แต่งคนอื่นๆ. Motor vehicle emissions : a major cause of lead poisoning among public school children of Kathmandu Valley, Nepal. ม.ป.ท.:Chulalongkorn University, 1997. Print.