Mathematical Monographs
31
Slebodzinski W.
Formes exterieures et leurs applications. vol.I,
Warszawa 1954, pp. VI, 154;Fr.
€ 10.00
43
Szarski J.
Differential inequalities. 2nd ed.rev.
Warszawa 1967, pp. 256;Engl.
€ 14.00