For citations:
Torshin S.P. Leading agrochemist-azotchik of the soviet union on the 100th anniversary of the birth of professor Petr Mikhailovich Smirnov. IZVESTIYA OF TIMIRYAZEV AGRICULTURAL ACADEMY. 2022;(1):83-86. (In Russ.) https://doi.org/10.26897/0021-342X-2022-1-83-87