@article{77435,
      author = {Hughes, H. D. and Henson, Edwin R.,},
      url = {http://library.usi.edu/record/77435},
      title = {Crop production; principles and practices.},
      publisher = {MacMillan Co.,},
      recid = {77435},
      pages = {xii, 620 p.},
      address = {New York,},
      year = {1957},
}