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 (DOC) artesian_wells_as_a_means_of_water_   2022-Feb-20 22:59     5.9 MB
 (DOC) deep_hole_drilling_1910.pdf           2022-Feb-20 22:59     6.4 MB
 (DOC) deep_well_drilling-the_principles_a   2022-Feb-20 22:59    13.5 MB
 (DOC) diamond_drilling_for_gold_and_other   2022-Feb-20 22:59     4.7 MB
 (DOC) irrigation_wells_and_well-drilling_   2022-Feb-20 22:59     3.3 MB
 (DOC) methods_of_pumping_water_from_deep_   2022-Feb-20 22:59     3.2 MB
 (DOC) modern_drilling_practice_1919.pdf     2022-Feb-20 22:59    12.3 MB
 (DOC) rock_boring_rock_drilling_explosive   2022-Feb-20 22:59    19.2 MB
 (DOC) rock_drilling_1911.pdf                2022-Feb-20 22:59     9.1 MB
 (DOC) rudimentary_treatise_on_well-diggin   2022-Feb-20 22:59     2.9 MB
 (DOC) soil_drilling_by_vibration_1961.pdf   2022-Feb-20 22:59     5.4 MB
 (DOC) the_use_of_windmills_in_irrigation_   2022-Feb-20 22:59     2.2 MB
 (DOC) water_supply-the_present_practice_o   2022-Feb-20 22:59     9.1 MB
 (DOC) water_systems_for_farm_homes_1918.p   2022-Feb-20 22:59     3.2 MB
 (DOC) well-boring_for_water_brine_and_oil   2022-Feb-20 22:59     6.4 MB
 (DOC) well-drilling_machinery_and_tools_1   2022-Feb-20 22:59    26.5 MB
 (DOC) well_and_spring_protection_1922.pdf   2022-Feb-20 22:59     5.6 MB