TY - BOOK AU - Connor, D.J. AU - Loomis, R.S. TI - Crop ecology: productivity and management in agricultural systems SN - 052138379X U1 - 631 21st ed. PY - 1992/// CY - New York PB - Cambridge University Press KW - Agricultural ecology KW - Crop science N1 - Index: p. 520-38 ER -