Conducerea activitatii economice - H.B. Maynard (ed.)
Tehnica 1970; 1971; 1972; 1972; 1973; 1974
Cartonata (hardcover)
Tehnica 1971
Cartonata (hardcover)
Tehnica 1970
Cartonata (hardcover)
Tehnica 1972
Cartonata (hardcover)
Tehnica 1973
Cartonata (hardcover)