1. Crow E. L., Davis F. A., and Maxfield M. W. “Statistics Manual,” U. S. Naval Ordnance Test Station, China Lake, Calif. 93555, NAVORD Rept. 3369 (1955), Table 12, p. 248.
2. Instructions for Cary Recording Spectrophotometer Model 14R (Cary Instruments, Monrovia, Calif.), R 1/64, p. 5.