SPSS Fall 2024 courses SPSS Course DescriptionsSPSS Course SpotlightSPSS Spring 2025 coursesSPSS Fall 2024 courses SPSS Fall 2024 courses SPSS 3998 3998. Variable Topics in Plant Science 3.00 credits | May be repeated for credit. Prerequisites: Grading Basis: Graded Topics and credits to be published prior to the registration period preceding the semester offerings. May be repeated with a change in content.