The British Carboniferous Producti II. Productus (sensu stricto); Semireticulatus and Longispinus groups Muir-Wood, Helen M. (Helen Marguerite) creator text enk London H.M. Stationery Off. 1928 monographic eng
print
217, [1] p, 12 l. incl. ill. : XII pl. ; 28 cm. by Helen Marguerite Muir-Wood. Issued December 22, 1928. List of works cited: p. 197-212. Paleontology Carboniferous Paleontology Great Britain Brachiopoda, Fossil QE797.P9 M8 Gt. Brit. Geological survey. Memoirs ... palæontology ; v.3, pt.1 gs 28000326 U.S. Geol. Survey. Libr. 820527 20260227111333.0 gs 28000326