Regular echinoids from the turonian and the coniacian (upper crateceous) of the mons basins (Belgium)/

Main Author: Geys, Joris F.
Format: Book
Language:English
Published: [Bruxelles]: [s.n.], [1982]
Subjects:
Item Description:Imncludes summary in english and french
Physical Description:16 p. : ill., diagrs ; 25 cm.
Bibliography:Includes bibliography