Blankwaardt, Bob Hand drilled wells: a manual on siting, design, construction and maintenace - Dar es Salaam: Rwegarulila Water Resources Institute, 1984 - viii,132p.: ill.; 27cm. Includes index ISBN: 9976-936-01-X Subjects--Topical Terms: WellsManualsHandbooksDesignConstruction LC Class. No.: EAF TD407.B55