Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleON NOTIONS AND MODELS OF TIME.AuthorsISARD, WALTERPublicationPapers in Regional Science, 1970, Vol 25, Issue 1, p7ISSN1056-8190Publication typeArticleDOI10.1111/j.1435-5597.1970.tb01475.x