00621nam a2200181Ia 450000100070000000500170000700800410002402000150006510000370008024500780011725000140019526000500020930000250025950400510028465000320033565000120036765000600037930464020210210062656.0110830s2010    pr              1 0 spa    a096334293200aÁlvarez Febles, Nelson,2Local13aLa tierra vivabmanual de agricultura ecológicacNelson Alvarez Febles.  aEd. 2010.  aUniversidad Metropolitana, P.R.bNomosc2010.  a282 p.bill.c26 cm.  aIncludes bibliographical references and index.00aAgricultural ecology2Local 0aEcology 0aAgriculture -- Environmental aspects -- Ecology.2Local