Show billion acres acre surveyed nearly a billion acres of farm lands in the united states have been mapped by soll soil surveyors of the united states department of agriculture this area Is greater than the combined area of european germany france and great Drita britain ln the work Is now progressing at tile the rate of 0 more than acres each year and department officials estimate that between 20 and 30 years will be required to complete the survey the cost of this work Is between 2 and 3 cents an acre |