“...United Nations, Dept. of Public Information,...”

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

“...Science Information Division, Dept. of Scientific and Industrial Research,...”

“...Biology Dept., Brookhaven National Laboratory; [available from Clearinghouse for Federal Scientific and Technical Information, Springfield, Va,...”

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

“...Biology Dept., Brookhaven National Laboratory [available from Clearinghouse for Federal, Scientific, and Technical Information, U.S. ...”

“...Science Information Division, Dept. of Scientific and Industrial Research, for the Ministry of Foreign Affairs ; Available from Technical Secretariat of CCOP/SOPAC, Mineral Resources Division...”

“...U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center ; Available to the public through the National Technical Information Service,...”