... a reasonable allowance for actual reduction in flow and production to be ascertained not by the flush flow, but by the settled production or regular flow; (b) in the case of mines a reasonable allowance for depletion thereof not to exceed the market...
Revenue Bill: Hearings Before the Committee on Ways and Means, House of ... - 24. lappuse
autors: United States. Congress. House. Committee on Ways and Means - 1918 - 2115 lapas