Leipzig, Teubner 1957 xiv + 423pp., in the series "Bibliotheca Scriptorum Graecorum et Romanorum Teubneriana", 21cm., publisher's hardcover with spine in orange cloth (some traces of wear), ex-dono on blanco endpaper, text clean and bright, good condition, Introduction in Latin and Text editon in Greek, K105676
1988 307 p., num. figs & pls, 4to, paperbound. Courier Forschungsinstitut Senckenberg.Includes the corrected version of the paper by C.A. Sanberg et al. ''Late Frasnian Mass Extinction: Conodont Event Stratigraphy, Global Changes, and possible Causes''.
1973-1991 xviii, 504, vi, 404, v, 574, v, 445, iv, 212 p., 23, 26, 17, 16, 8 figs, 27, 25, 39, 41, 13pls. publisher's cloth binders (joints of first two volumes worn). One volume with library stamp, and 3 volumes with previous owner's signature.
Ann Arbor, Gomidas Institute 1999 xvi + 375pp., 23cm., text in English, original softcover, good condition, X114122