Published in The Journal of the Royal Astronomical Society of Canada Vol. 68, No. 3, JUNE 1974, Whole No. 528.

Table of Contents

• PAPER
• TABLE 1
• NOTES TO TABLE 1
• REFERENCES
• Figure 1a
• Figure 1b
• Figure 2
• Figure 3
• Figure 4
• Figure 5
• Figure 6
• Figure 7
• Figure 8
• Figure 9
• Figure 10
• Figure 11
• Figure 12
• Figure 13
• Figure 14
• Figure 15
• Figure 16
• Figure 17
• Figure 18
• Figure 19
• Figure 20
• Figure 21
• Figure 22