Fauna of the ussr Echinodermes (Echinodermata) Volume I, Part I. Echinides (Echinoidea).
Diakonov, A.M.
Fauna of the ussr Echinodermes (Echinodermata) Volume I, Part I. Echinides (Echinoidea). - 361 pp.
Fauna of the ussr Echinodermes (Echinodermata) Volume I, Part I. Echinides (Echinoidea). - 361 pp.