. . . . "History"@en . "History" . "Agricultural Conservation Program : 30 year summary, 1944-1974, practice cost-shares by states"@en . . . "Agricultural conservation program : 30 year summary, 1944 through 1974 : practice cost-shares by States" . . . "Statistics" . "Statistics"@en . "Agricultural conservation program 30 year summary, 1944 through 1974 : practice cost-shares by States"@en . . . . . . . . .