Pavan, M.:
TECHNOLOGICAL FOLLY? IT IS TIME TO FACE THE TRUTH : TO THE YOUNG PEOPLE OF TODAY AND THEIR WORLD / M. Pavan . Englisch translation by LIANE CRISARI BURNAND . Hrsg.: ITALIAN FORESTAL ADMINISTRATION AND THE COUNCIL OF EUROPE TO INFORM YOUNG PEOPLE ABOUT TODAYS ENVIRONMENTAL PROBLEMS, 1972. - 54 S.: 31 Abb.