TY - BOOK ID - 126645065 TI - An introduction to positive economics PY - 1983 SN - 0297782657 9780297782650 PB - London: Weidenfeld and Nicolson, DB - UniCat KW - Economics UR - https://www.unicat.be/uniCat?func=search&query=sysid:126645065 AB - ER -