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

“...Kansas Dept. of Transportation ; Available to the public through the National Technical Information Service,...”

“...Illinois Dept. of Transportation, Bureau of Materials and Physical Research ; Available through the National Technical Information Service,...”

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