On the heads of certain Arthrodires. 1 (Pholidosteus, Leiosteus and Acanthaspids) & 2 (On the cranium and cervical joint of the Dolichothoraci (Acanthaspida)).
Sthm 1934-45. (KVAH) Royal 8vo. 80 + 70 pp. + 14 pl. + printed wrappers. Near mint.
Inrikes enhetsfrakt Sverige: 62 SEK