00264nam a2200097Ia 450000500170000000800410001705000210005810000180007924500370009726000320013420251229182112.0251229s9999    xx            000 0 und d  aTH 4911 .B35 C.4  aBarre, H. J . 0aFarm structures BK.cH. J  Barre  aNew Yorkb John Wileyc1950