3Wayne W. Lapham, Francwska D. Wilde, Michael T. Kkoterba. Ground - water Date - collection Protocols and Procedures for the National Water- quality Assessment Program:Selection, Installation, and Documentation of Wells, and Collection of Related Date [Z]. U. S. Geological Survey Open -File Report. 1995.
4State Coordinating Committee on Ground Ware. Technical Guidance for Well Construction and Ground Water Protection [Z].State of Ohio. 2000.
3J Mark Boggs, Steven C. Young, Lisa M. Beard. Field Study of Dispersion in a Hetero--geneous Aquifer -- 1. Overview of Site Description [J]. Water Resources Research, 1992,28(12) : 3 281 3 291.
