Flora of the USSR - Volume IX: Rosales and Sarraceniales. Komarov, V. L., Yuzepchuk, S. V., Borisova, A. G., Krishtofovich, A. N., Lozina-Lozinskaya, A. S., Maleev, V. P., Palibin, I. V., Poyarkova, A. I., & Tsinzerling, Y. Volume 9 of Flora of the USSR, Keter Press.
Flora of the USSR - Volume IX: Rosales and Sarraceniales [link]Paper  abstract   bibtex   
Described tree species Genera: [::]Sorbus [::]Crataegus [::]Malus [::]Pyrus
@book{komarovFloraUSSRVolume1970c,
  title = {Flora of the {{USSR}} - {{Volume IX}}: {{Rosales}} and {{Sarraceniales}}},
  author = {Komarov, V. L. and Yuzepchuk, S. V. and Borisova, A. G. and Krishtofovich, A. N. and Lozina-Lozinskaya, A. S. and Maleev, V. P. and Palibin, I. V. and Poyarkova, A. I. and Tsinzerling, Yu},
  editor = {Komarov, V. L. and Yuzepchuk, S. V.},
  date = {1970},
  volume = {9},
  publisher = {{Keter Press}},
  location = {{Jerusalem}},
  url = {http://mfkp.org/INRMM/article/13561884},
  abstract = {Described tree species Genera: [::]Sorbus [::]Crataegus [::]Malus [::]Pyrus},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13561884,botany,crataegus-spp,featured-publication,free-access-book,malus-spp,pyrus-spp,russia,sorbus-spp,species-description},
  series = {Flora of the {{USSR}}}
}

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