1. Phosphorus and nitrogen concentrations and loads at Illinois River south of Siloam Springs, Arkansas, 1997-1999 Author/Creator: Green, W. Reed Publication/Creation: Little Rock, Ark. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
2. Potentiometric surface of the Ozark aquifer in northern Arkansas, 2001 Author/Creator: Schrader, Tony P. Publication/Creation: Little Rock, Ark. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading