| Name | Country | Region | Address |
|---|---|---|---|
| u Oldekopp B.K. | Russia | ||
| u Orlova V.N. | Russia | ||
| u Oznobishina I.D. | Russia | ||
| u Panova D.A. | Russia | ||
| u Pashkova A.V. | Russia | ||
| u Perfileva M.A. | Russia | ||
| u Petrovo-Solovovo | Russia | ||
| u Petrovo-Solovovo M.F. | Russia | ||
| u Petrovskogo I.P. | Russia | ||
| u Pishvanova A.S. | Russia |