McGraw-hill yearbook of science and technology:   comprehensive coverage of the important events of 1969 as compiled by the staff of the McGraw-hill encyclopedia of science and technology 
/ by McGraw-hill book company 
 - new york  McGraw-hill book company  1970 
 - 477p. 
<br/><br/><label>Dewey Class. No.: </label>505  / MCG/M