(Bulletin 16, 1920.) [A preliminary edition containing chapters 1-4 and the appendix was previously issued, for which see Monthly catalogue for May, 1920, p. 648.]
Notes:
(Bulletin 16, 1920.) [A preliminary edition containing chapters 1-4 and the appendix was previously issued, for which see Monthly catalogue for May, 1920, p. 648.] * For Sale by Superintendent of Documents. Paper, 50c.
Availability:
* For Sale by Superintendent of Documents. Paper, 50c.