Circulatory concepts in forest-based industries.
United Nations.Economic Commission for Europe/Food and Agriculture Organization of the United Nations.Forestry and Timber Section,author.
Food and Agriculture Organization of the United Nations.
United Nations.Economic Commission for Europe.
At head of title: Food and Agriculture Organization of the United Nations, UNECE.
"ECE/TIM/SP/49"--Title page verso.
"Sales No. E.22.II.E.10"--Title page verso.
Includes bibliographical references.