Proceedings of the Seminar on Exploration and Evaluation of Tin Deposits in Southeast AsiaWerner GochtVypredanáPostrážiť
Proceedings of the Seminar on Production and Marketing of Associated Heavy Minerals from South-East Asian Tin DepositsWerner GochtVypredanáPostrážiť
Proceedings of the Seminar on Importance of Primary Tin Mining in Southeast AsiaWerner GochtVypredanáPostrážiť
The socio-economic impacts of the dissemination of new rural development technologies in the Republic of KoreaWerner GochtVypredanáPostrážiť
