TY - BOOK ID - 6669665 TI - Introduction to systems theory AU - Martens, Hinrich R. AU - Allen, Don R. PY - 1969 SN - 0675096030 9780675096034 PB - Columbus (Ohio) : Merrill, DB - UniCat KW - System Analysis KW - System analysis. UR - https://www.unicat.be/uniCat?func=search&query=sysid:6669665 AB - ER -