Barnes, Gregory Allen
Philadelphia
ISI PRESS
1984
0894950304
Curry, Dean
Washington
United States Information Agency
București
Editura tehnică
Baum, Lyman Frank
Loughborough
Ladybird
9780721408286
Bescherelle, Louis Nicolas
Paris
Librairie Hatier
221805891X
Bucuresti
Editura Tehnică
Institutul Român de Standardizare