Dictionaries, Thesauruses, Pictures, and Press Releases
- Harsanyi, John Charles
- Hart, Edwin Bret
- hartig net
- Hartig, Theodor
- Harting, Pieter
- Hartmann, Carl Friedrich Alexander
- Hartmann, Georg
- Hartmann, Johannes
- Hartmann, Johannes Franz
- Hartsoeker (or Hartsoecker), Nicolaas
- Hartwig, (Carl) Ernst (Albrecht)
- harvester ants
- harvester termites
- Harvey, Edmund Newton
- Harvey, Hildebrand Wolfe
- Hasenöhrl, Friedrich
- Hasler, Arthur Davis
- Hasse, Helmut
- Hassenfratz, Jean-Henri
- Hassler, Ferdinand Rudolph