International North Pacific Fisheries Commission Pic Production Instrument Go. 



1955. Annual report for the year 1955. Stroke counters and revolution 



Vancouver, Canada, 1956, 67p. counters. Pic Production 



Instrument Company, Chicago 6, 



Perkins, HenraA. 111., 8 p. 



1942. College physics. (Gives information on Pic 



Prentice-Hall, Inc., New York. digital-registers.) 

 591 p. 



17 



INT.-DUP, SEC, WASH.. D.C. .' > 3 : 5 



