00457nam a2200145Ia 4500008004100000010001200041040001700053082002500070100001900095245006500114260004100179300001400220650005700234700002000291190327s9999||||xx |||||||||||||| ||und|| a55-9620 aNITILcNITIL 221sta630.973bH425A aHaystead, Ladd 4aThe Agricultural regions of the United StatescLadd Haystead aNormanbUniversity of Oklahomac1955 axx, 288p. aAgriculture-United States; Land reform-United States aFite, Gilbert C