Yazar
Pentti Hakkila
11 cilt bulundu.
Pentti Hakkila · Island Press
578 sayfa · 1989
By-products / Forest products / Logging / Slash (Logging) / Wood waste
Pentti Hakkila · Ministry for Foreign Affairs, Dept. for International Development Co-operation
37 sayfa · 1983
Evaluation / Forest nurseries / Forestry consultants / Forestry projects / Forests and forestry
Pentti Hakkila · Suomen itsenäisyyden juhlavuoden 1967 rahasto
66 sayfa · 1974
Lumbering / Wood chips
Pentti Hakkila · Yayınevi bilinmiyor
22 sayfa · 1968
Density / Forests and forestry / Mensuration / Norway spruce / Wood
Pentti Hakkila · Finnish International Development Agency
28 sayfa · 1985
Forest policy / Forestry projects / Forests and forestry
Pentti Hakkila · Finnish National Fund for Research and Development
163 sayfa · 1979
Forests and forestry / Growth / Pulpwood / Timber / Trees