TY - BOOK ID - 136904745 TI - Study guide 4 AU - Bygrave, Stephen AU - Allen, Graham PY - 1996 SN - 0749273666 PB - Milton Keynes Open university press DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:136904745 AB - ER -