TY - BOOK ID - 140718771 TI - Proceedings of the Chinese US symposium on systems analysis, Xian, 1981 AU - Gray, Paul AU - Yuanzhang, Lui PY - 1981 PB - New York, Tcronto, Singapore Wiley DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:140718771 AB - ER -