Units:1Additional depth of content for ECON 423. Students receive single grade for combined four units of ECON 423 and ECON 423D. Division: Upper Division Requisites: Prerequisite: ECON 202 and ECON 203. Corequisite: ECON 423. Permission to enroll: No Special Consent Required Grading mode: Mandatory Letter Grade Sustainability: Sustainability Focused Weekly: Seminar 1 hr. Possible Instruction Mode(s): In Person