Williamson A.K. Ground-water flow in the Gulf Coast aquifer systems, south-central United States / A.K.Williamson,H.F.Grubb, 2001. - 173 p. - Текст : непосредственный.
Grubb H.F. Summary of hydrology of the regional aquifer systems, Gulf coastal plain, south-central United States / H.F.Grubb, 1998. - vii,61 p. p. - Текст : непосредственный.