APA

World Road Association P., Ministry of Infrastructure of Mongolia & Department of Roads Government Implementing Agency of Mongolia. (2002). International seminar on the appropriate use of natural materials in roads, Ulaanbaatar, Mongolia, 18-21 June, 2002. uo: World Road Association, PIARC.

Chicago

World Road Association PIARC, Ministry of Infrastructure of Mongolia and Department of Roads Government Implementing Agency of Mongolia. 2002. International seminar on the appropriate use of natural materials in roads, Ulaanbaatar, Mongolia, 18-21 June, 2002. uo: World Road Association, PIARC.

Harvard

World Road Association P., Ministry of Infrastructure of Mongolia and Department of Roads Government Implementing Agency of Mongolia. (2002). International seminar on the appropriate use of natural materials in roads, Ulaanbaatar, Mongolia, 18-21 June, 2002. uo: World Road Association, PIARC.

MLA

World Road Association PIARC, Ministry of Infrastructure of Mongolia and Department of Roads Government Implementing Agency of Mongolia. International seminar on the appropriate use of natural materials in roads, Ulaanbaatar, Mongolia, 18-21 June, 2002. uo: World Road Association, PIARC. 2002.