“...National Technical Information Service, U.S. Dept. of Commerce,...”

“...Forestry Research and Information Centre, Forest Survey and Research Office, Dept. of Forest,...”

“...Israel Program for Scientific Translations [available from the U.S. Dept. of Commerce, Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.]...”

“...Dept. of Commerce Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.],...”