Environmental impact study of the Gorkha-Narayangadh Highways (a recently finished development project of His Majesty's Govt. of Nepal) [road construction, economic aspects, hill and tarai areas, Nepal]

altiplanos asia asie bienestar social economia economics economie living standards llanuras nepal niveau de vie nivel de vida physiographic features plaine plains road transport social welfare transport transport routier transporte transporte por carretera