Series volume

Royal Horticultural Society, 1972. 10 Year Addendum 1961-1970, containing the names and parentage of all orchid hybrids registered from 1st January 1961 to 31st December 1970. Sander's List of Orchid Hybrids: lxiv, 632 pp.. [Addendum to David Sander's one-table list of orchid hybrids containing the names and parentage of all registered orchid hybrids from the 1st January 1946 to 21st December 1960, issued by Sander's (David) Orchids ltd.] ≡