Investigations of porous wood as pulp raw material : 1, Fibre lengths of the species Alnus glutinosa (L.) Gaertn., Alnus incana (L.) Moench, Betula verrucosa Ehrn. and Populus tremula L
Investigations of porous wood as pulp raw material : 2, Sulphate pulps aspen (Populus tremula L.) and black alder (Alnus glutinosa (L.) Gaernt.)
Investigations of porous wood as pulp raw material : 1, Fibre lengths of the species Alnus glutinosa (L.) Gaertn., Alnus incana (L.) Moench, Betula verrucosa Ehrn. and Populus tremula L
Investigations of porous wood as pulp raw material : 1, Fibre lengths of the species Alnus glutinosa (L.) Gaertn., Alnus incana (L.) Moench, Betula verrucosa Ehrn. and Populus tremula L