M. R. Wehr, J. A. Richards & T. W. Adair. (1996). Physics of the Atom. New Delhi: Narosa Pub.
M. R. Wehr, J. A. Richards and T. W. Adair. 1996. Physics of the Atom. New Delhi: Narosa Pub.
M. R. Wehr, J. A. Richards and T. W. Adair. (1996). Physics of the Atom. New Delhi: Narosa Pub.
M. R. Wehr, J. A. Richards and T. W. Adair. Physics of the Atom. New Delhi: Narosa Pub. 1996.