| GOST | R. B. Dobrotin // Voprosy istorii estestvoznaniia i tekhniki. – 1980. – Issue 4 C. 168-168 . |
|---|---|
| MLA | "R. B. Dobrotin." Voprosy istorii estestvoznaniia i tekhniki. 4 (1980).:168-168. |
| APA | (1980). R. B. Dobrotin. Voprosy istorii estestvoznaniia i tekhniki. no. 4, pp.168-168 |
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