Lengyel, Peter
Approaches to the science of socio-economic development / edited by Peter Lengyel. With contributions by Raymond Aron [and others]. - Paris : Unesco, 1971. - 383 p. illus 24 cm.
Economic development
Economic development--Social aspects
330
Approaches to the science of socio-economic development / edited by Peter Lengyel. With contributions by Raymond Aron [and others]. - Paris : Unesco, 1971. - 383 p. illus 24 cm.
Economic development
Economic development--Social aspects
330