Opearational Methods in Mathematical Physics.
Jeffreys, Harold.
Opearational Methods in Mathematical Physics. - 2nd Ed. - New York Stechert - Hafner Service Agency. 1964 - Cambridge Tracts in Mathematics and Mathematical Physics .
Opearational Methods in Mathematical Physics. - 2nd Ed. - New York Stechert - Hafner Service Agency. 1964 - Cambridge Tracts in Mathematics and Mathematical Physics .