| ★ | (EN06) Toxic Metals | Environmental Public Health Practice, Part 6 | North Dakota Public Health Training Network @ndphtn | 380 | — | |
| 18 | (A005) Safe Drinking Water and Antibiotics | Origins of Public Health, Part 2 | North Dakota Public Health Training Network @ndphtn | 769 | — | 89 |
| 6 | (A013) CDC Environmental Health, Injury Prevention and Occupational Safety | Part 6 | North Dakota Public Health Training Network @ndphtn | 737 | — | 92 |
| 10 | (EN01) Environmental Public Health Practice: Introduction | North Dakota Public Health Training Network @ndphtn | 733 | — | 91 |
| 2 | (EN03) Toxicology`| Environmental Public Health Practice, Part 3 | North Dakota Public Health Training Network @ndphtn | 512 | — | 94 |
| 8 | (EN02) Epidemiology | Environmental Public Health Practice, Part 2 | North Dakota Public Health Training Network @ndphtn | 389 | — | 91 |
| 15 | (EN04) Policy and Regulation | Environmental Public Health Practice, Part 4 | North Dakota Public Health Training Network @ndphtn | 275 | — | 90 |
| 9 | (EN11) Food Safety | Environmental Public Health Practice, Part 11 | North Dakota Public Health Training Network @ndphtn | 229 | — | 91 |
| 4 | (EN07) Hazardous Chemicals | Environmental Public Health Practice, Part 7 | North Dakota Public Health Training Network @ndphtn | 209 | — | 92 |