Pearson, C. J. AgronomÃa de los sistemas pastoriles / by C.J. Pearson and R.L. Ison - Buenos Aires : Hemisferio Sur, 1994 - 157 p. ; ilus. - . Trad. De : Agronomy of grassland system LCCN: 166763 Subjects--Topical Terms: Pastizales I. Ison, R. L. II. t. Dewey Class. No.: 633.2 P4y