TY - GEN AU - J Favreau C2 - Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD DA - 1998-01-01 LA - en PB - Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD PY - 1998 TI - Federal Implementation Guideline for Electronic Data Interchange ASC X12 003050 Transaction Set 850 Purchase Order (Revision 1) Implementation Convention ER -