na INLIS000000000011068 Ind 0010-1118011068 Introducing the ley farming to the mediterranean basin: proceedings of an international workskop on ..... 26-30 June 1989, Perugia, Italy INTERNATIONAL WORKSHOP ON INTRODUCING THE LEY FARMING SYSTEM IN THE MEDITERRANEAN BASIN (1989 : Perugia) Scoft Christiansen...[et-al] Aleppo ICARDA 1993 ix, 299 p.: ill.; 25 cm. ix, 299 p.: ill.; 25 cm. 631.153INTi 631.153 ALLEY CROPPING Mar-94