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Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
Letter from the Russian Association of Physicists in Moscow to Dr. Dirac inviting him to participate and read a paper at their upcoming Conference of Physicists in August.
Certificate from the Ukrainian Institute of Physics and Technology to Dr. Dirac inviting him to participate in the theoretical conference of УФТИ for scientific consultation and asking him for assistance.
Some of the material in is restricted to members of the community. By logging in, you may be able to gain additional access to certain collections or items. If you have questions about access or logging in, please use the form on the Contact Page.
