00698nam a2200217Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library 517.95 BER Bergman, S. 4389 Contributions to the theory of partial differential equations S. Bergman…[et al.] Princeton Princeton University Press 1954 v, 257p. Annals of Mathematics Studies no.33 NASA Thesaurus Partial Differential Equations Bers, L. 4390 Bochner, S. 4391 John, F. 4392 BK 2458 2458 0 0 0 0 BAN BAN GEN 1965-06-22 18.00 0 517.95/ BER 2745 2021-11-05 18.00 1965-06-22 BK Rs. 18.00