1. A brief survey of selected woody species of North Korea (D.P.R.K.)
A brief survey of selected woody species of North Korea (D.P.R.K.). II / Jiří Kolbek & Miroslav Kučera ; illustrated by Miroslav Kučera. Průhonice : Institute of Botany Academy of Sciences of the Czech Republik, 1999. 93 s. [1, currently available 1]