TY - BOOK ID - 129423661 TI - Measuring Positive Externalities from Unobservable Victim Precaution: An Empirical Analysis of Lojack PY - 1997 PB - Cambridge, Mass. National Bureau of Economic Research DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:129423661 AB - ER -