00234nam a22000977a 4500003000400000008004100004082001800045245003200063260003300095300000800128OSt240215b        |||||||| |||| 00| 0 eng d  aP631.305bA25  aAgricultural Engg. - Vol.61  aSt. JosephbA. S. A. Ec1980  a1-6