title: On the use of path analysis and related procedures for the investigation of ecological problems.
authors.affiliation: U.S. Geological Survey, National Wetland Research Center, 700 Cajundome Boulevard, Lafayette, Louisiana 70506, USA.
authors.forename: J B
authors.initials: JB
authors.lastname: Grace
authors.forename: B H
authors.initials: BH
authors.lastname: Pugesek