.BG D
.VE $Header: /usr3/s/current/s/data/.help/RCS/bicoal,v 1.2 83/12/30 23:08:06 rab Exp $
.FN bicoal
.TL
bicoal: Bituminous Coal Production in USA
.PP
.AG tons
production in millions of net tons per year, 1920-1968.
.SH SOURCE
U. S. Bureau of Mines, also in
J. W. Tukey,
.ul
Exploratory Data Analysis,
1977, Addison-Wesley Publishing Co., Massachusetts.
.KW dataset
.WR
