@article{Warden:154823,
      recid = {154823},
      author = {Warden, Thomas},
      title = {Foreign Agricultural Trade of the United States Calendar  Year 1990 Supplement},
      address = {1991-11},
      number = {1484-2016-122264},
      series = {NTIS},
      pages = {490},
      year = {1991},
      abstract = {This statistical reference summarizes current and  historical data on U.S. foreign
trade in agricultural  products. Tables highlight commodity and country  information,
I including values, quantities, principal  markets for agricultural exports, and
import sources.},
      url = {http://ageconsearch.umn.edu/record/154823},
      doi = {https://doi.org/10.22004/ag.econ.154823},
}