Routly) - Galactic Astronomy. (SanFrancisco: W. H. Freeman & Company), 1968 [182] D. Mihalas - Stellar Atmospheres. (SanFrancisco: W. H. Freeman & Company)
health literacy: A framework for understanding and action. Jossey-Bass: SanFrancisco, CA. Health literacy course and materials based at Harvard University
coronavirus related death reported in San Mateo County. KRON4. 2020-03-15 [2020-03-15]. (原始内容存档于2020-03-16) (美国英语). SCC, Healthy. Update: 23 new cases of #COVID19