McGraw-Hill, .
Yearbook of Science and Technology 1972 / - Reprinted 1973 / - New York : McGraw-Hill Book Company. - p.468 :
07-045340-3
AK73,N60 / L3
Yearbook of Science and Technology 1972 / - Reprinted 1973 / - New York : McGraw-Hill Book Company. - p.468 :
07-045340-3
AK73,N60 / L3