On self- and cross-incompatibility shown by Betula verrucosa Ehrh. and Betula pubescens Ehrh
By: Max Hagman
Contributors: Helsingin yliopisto
Series: Metsäntutkimuslaitoksen julkaisuja -- 73: 6
Published: 1971
Place of publication: Hki
Language: eng
Number of pages: 125
Notes: Thesis (doctoral)--University of Helsinki, 1971.