Literature references

1 literature reference for Epipactis helleborine subsp. transcaucasica A.P.Khokhr.:

Author: A.P.Khokhr.
Year: 1991
Title:
Source: In: Byull. Moskovsk. Obshch. Isp. Prir., Otd. Biol., n.s., 96(4): 107