Kemmer, N. (1964). theory of space, time and gravitation. Pergamon Press.
Dyfyniad Arddull ChicagoKemmer, N. Theory of Space, Time and Gravitation. Oxford: Pergamon Press, 1964.
Dyfyniad MLAKemmer, N. Theory of Space, Time and Gravitation. Pergamon Press, 1964.
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