There have been informal studies on silver absorption and elimination published only on the internet. (clspress.com)
As final exams approached, students were especially helpful to each other, swapping definitions and examples and organizing informal study sessions. (sciencedaily.com)
«In high school, I read «Zen and the Art of Motorcycle Maintenance» and it sent me on a path of informal study of Eastern philosophy, Zen, Taoism and meditation. (mindbodygreen.com)