<i>CYDONIA OBLONGA </i> MILL. (ROSACEAE) AT THE PETER THE GREAT BOTANICAL GARDEN by G. A. Firsov, A. V. Volchanskaya, K. G. Tkachenko, N. E. Staroverov, A. Yu. Gryaznov

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THE LATENT PERIOD OF SOME OF SPECIES OF THE GENUS <i> MALUS </i> INTRODUCED IN THE PETER THE GREAT BOTANICAL GARDEN by K. G. Tkachenko

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