Gebonden, hardcover; 1935; Messrs Babcock & Wilcox, Ltd at the University Press Cambridge; 207pp.; Ex libris on free endpaper -- Conditie: Goed; Engels
Gebonden, hardcover; 1992; Wien/New York : Springer-Verlag; 136pp.; Name and year on endpaper. -- Conditie: Goed; Original pictorial boards, illusrated in colour and b/w, 4to.; Engels; ISBN10: 0387823670, ISBN13: 9780387823676