Principles of Real Estate AGEC 347 Principles and techniques of real estate appraisals, practical application of appraisal principles, and techniques to real property evaluation. Prereq: ECON 201. Cross-listed with BUSN 347. Class offering(s) related to this course: No class offerings at the moment. Please contact the NDSU DCE office for information about this course offerings at: 701-231-7015 or toll-free: 1-800-726-1724.