by Charles Spearman. 456 pgs.
by Charles Spearman. 458 pgs.
by Charles Spearman. 362 pgs.
by Charles Spearman. 360 pgs.
by David Perkins, Stellan Ohlsson, Richard Herrnstein, Charles Murray. 11 pgs.
by Arthur R. Jensen. 4 pgs.
by Richard Lynn, Kenneth Owen. 10 pgs.
by Arthur R. Jensen. 9 pgs.
by Carl Murchison. 497 pgs.
by David N. Perkins. 4 pgs.
by Raymond E. Fancher. 269 pgs.
by Stephen Jay Gould. 444 pgs.
by Ian Dennis, Patrick Tapsfield. 194 pgs.