00807nam0-22002891i-450-99000385532040332120120103183235.00-258-96938-5000385532FED01000385532(Aleph)000385532FED0100038553220030910d1977----km-y0itay50------baengGBAgricultural economicsprinciples and policyChristopher RitsonLondonCrosby Lockwood Staples1977xiii, 409 p.ill.24 cmEconomia agrariaRitson,Christopher88889ITUNINARICAUNIMARCBK990003855320403321H/1.1 RIT8846/ISESSESAgricultural economics514836UNINA