Granhof, Jens Seed extraction 2 : extraction of pine seed by means of sun drying on elevated trays followed by tumbling / by Jens Granhof. -- Humlebaek : Danida Forest Seed Centre, 1994. -- 7 s. : obr., tab. ; 30 cm. -- (Technical Note ; No. 17). -- (brož.) : 25.00 Sk

630*232.312.2+630*232.3+630*232.312.2+630*232.312.9
ZV001