Analysis of variance by Iversen, Gudmund R., Norpoth, Helmut

Causal modeling by Asher, Herbert B.

Analysis of variance by Iversen, Gudmund R., Norpoth, Helmut

Operations research methods as applied to political science and the legal process by Nagel, Stuart S. 1934-, Neef, Marian

Causal modeling by Asher, Herbert B.

Tests of significance by Henkel, Ramon E. 1931-

Causal modeling by Asher, Herbert B.

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Introduction to factor analysis what it is how to do it by Kim, Jae-On

Interpreting and using regression. by Achen, Christopher H.