Statistics of world trade in steel
La ganaderia en America Latina : situation, problemas y perspectivas : I - Colômbia, México, Uruguay y Venezuela : informe preparado con arreglo al programa conjunto
Socio-economic development and fertility decline in Sri Lanka : background paper prepared for the project on socio-economic development and fertility decline
Population and human rights : proceedings of the Symposium on Population and Human Rights : Vienna, 29 June-3 July 1981