| ChemGlobe: Germanium: Electronic, thermal, and steric data along with an isotope table. |
| ChemicalElements.com: Germanium: Basic information, atomic structure, and isotopes. |
| Discovery of Germanium: Article by Clemens Winkler. |
| EnvironmentalChemistry.com: Germanium: Atomic structure, chemical and physical properties, and table of nuclides. |
| Germanium: Data tables and historic information. |
| It's Elemental: Germanium: Basic physical and historical information. |
| LANL: Germanium: History, sources, uses, and properties. |
| Lenntech: Germanium: Physical data, chemical properties, health and environmental effects. |
| Radiochemistry of Germanium: Full text of the monograph by Jacob A. Marinsky (University of Buffalo, Dept. of Chemistry, Buffalo, New York). [PDF] |
| USGS Minerals Information: Germanium: Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). |
| WebElements: Germanium: Extensive information on history, uses, occurrence, compounds, and properties of the element. |
| Wikipedia: Germanium: Properties of the element, including its history, applications, and characteristics. |
Classical
