Fresh-water invertebrates of the United States /

Eitemau Tebyg

• Invertebrate Zoology /
  gan: Hegner, Robert W.
  Cyhoeddwyd: (1960)
• The invertebrates: protozoa through ctenophora vol. I /
  gan: Henrietta Hyman, Libbie
  Cyhoeddwyd: (1940)
• The invertebrates: echinodermata the coelomate bilateria vol. IV /
  gan: Henrietta Hyman, Libbie
  Cyhoeddwyd: (1955)
• The invertebrates: platyhelminthes and rhynchocoela the acoelomate bilateria vol. II /
  gan: Henrietta Hyman, Libbie
  Cyhoeddwyd: (1951)
• The invertebrates: smaller coelomate groups: chaetognatha, hemichordata; pogonophora; phoronida; ectoprocta; brachiopoda; sipunculida; the coelomate bilateria vol. V /
  gan: Henrietta Hyman, Libbie
  Cyhoeddwyd: (1959)