TY - RPRT TI - Determination of selection gradients using multiple regression versus Structural Equation Modeling (SEM) AU - B.H. Pugesek AU - A. Tomer PY - 2007 DO - 10.1002/bimj.4710370406 UR - https://pubs.usgs.gov/publication/1008660 ID - 1008660 ER -