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| Careers in Science Saving the Ozone Layer | x | ||||
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| Appendix A Laboratory Safety | 182 | (2) | |||
| Appendix B Using a Laboratory Balance | 184 | (1) | |||
| Appendix C List of Chemical Elements | 185 | (1) | |||
| Appendix D Periodic Table of the Elements | 186 | (2) | |||
| English and Spanish Glossary | 188 | (6) | |||
| Index | 194 | (4) | |||
| Acknowledgments | 198 |