[외국도서] Submersible Technology: Adapting to Change : Proceedings of an international conference ('SUBTECH `87- Adapting to Change') organized jointly by the A (Hardcover, 1988 ed.)
[외국도서] Improved Techniques for the Extraction of Primary Forms of Energy : A Seminar of the United Nations Economic Commission for Europe (Vienna 10-14 Novem (Hardcover, 1983 ed.)