Contributions. Communications.

[Montréal : Presses de l'Université de Montréal, ©1969]

xxvii, 380 págs. : ilustraciones ; 25 cm.

Conference held at the Université de Montréal, Aug. 25-30, 1969.

"Sponsored by the International Union of Pure and Applied Physics [and others]."

English or French.

Incluye referencias bibliográficas.