M. A. M. Langendijk and van de Korput, J. A.,
“The Balti-latrine : a socio-technical study of traditional sanitation systems in Baltistan”, vol. no. 5. Aga Khan Health Service, Gilgit, Pakistan, p. iii, 40 p. : 6 drwg., 7 fig., 1 map, 4 photogr., 5 tab., 1995.