| Title | Pages / Words | Save |
| Volcanologists | 3 / 611 |  |
| Soufierre Hills | 2 / 414 | |
| MT ST Helens | 4 / 1116 | |
| Volcano Mount Vesuvius | 11 / 3077 | |
| Volcanos | 11 / 3102 | |
| Mount Etna | 4 / 1155 | |
| Origin and Occurrence of Volcanism in the USA | 5 / 1348 | |
| Yellowstone National park | 6 / 1589 | |
| The Need to Send Humans into Space | 6 / 1776 | |
| Volcanoes | 8 / 2217 | |
| Volcanoes | 8 / 2217 | |
| Krakatoa | 11 / 3063 | |
