Unson, D. T. (1977). A study of the prevelence of tuberculosis among elementary and secondary public school teachers in selected schools in the four districts of Manila, Philippines [microform]. Photoduplication Service. University of the Philippines Library.
Chicago-referens (17:e uppl.)Unson, Diana T. A Study of the Prevelence of Tuberculosis Among Elementary and Secondary Public School Teachers in Selected Schools in the Four Districts of Manila, Philippines [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA-referens (9:e uppl.)Unson, Diana T. A Study of the Prevelence of Tuberculosis Among Elementary and Secondary Public School Teachers in Selected Schools in the Four Districts of Manila, Philippines [microform]. Photoduplication Service. University of the Philippines Library, 1977.