University of Tehran Law Quarterly 2588-5618 39 1 2009 05 22 BREIF REFLECTION ON THE THEORY SECULAR CONTRACT LAW IN THE POSITIVE IRAN LAW BREIF REFLECTION ON THE THEORY SECULAR CONTRACT LAW IN THE POSITIVE IRAN LAW 28283 FA Journal Article 1970 01 01 Binding statutes Chang of usage and practice Proprietary contracts Usage and practice Voluntary statutes. https://jlq.ut.ac.ir/article_28283_dd4edd81dae5c5efbe88c6546e261c33.pdf