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- herring smelts
- herringbone cross-bedding
- Hertwig, Karl Wilhelm Theodor Richard von
- Hertwig, Wilhelm August Oscar
- Hertz, Mathilde Carmen
- Hervyan
- hesperidium
- hesperidium
- Hesperiidae
- Hesperornis
- Hess, Victor Franz (Francis)
- Hesse, Ludwig Otto
- Hessel, Johann Friedrich Christian
- Heterian
- hetero-
- hetero-
- hetero-
- hetero-
- heteroalleles
- heteroalleles