GROUND-WATER LEVELS IN SELECTED WELL FIELDS AND IN WEST-CENTRAL FLORIDA, MAY 1981 = SURFACE PIEZOMETRIQUE DE CERTAINS CHAMPS DE PUITS DU CENTRE OUEST DE LA FLORIDE, MAI 1981YOBBI DK; WOODHAM WM.1981; ; USA; DA. 1981; 2 SHEETS; BIBL. 2 REF.; 2 TAB. ; ILL.;[OPEN-FILE REP. (U. S. GEOL. SURV. 1978); ISSN 0196-1497; NO 81-1106]Serial Issue

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