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by United Nations Development Programme.; International Board for Plant Genetic Resources.; Perret, P. M.; Bettencourt, E.;
Year: 1986., Callno: 631.52 BET [Q]
Book
by Hintum, Th. J. L. van.; EUCARPIA/IBPGR Symposium (1990 : Wageningen, The Netherlands); Perret, P. M.; International Board for Plant Genetic Resources.; Frese, L.;
Year: 1991., Callno: 631.53 CRO [Q]
Book