au.\*:("RICHARDS RP")
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MISSISSIPIAN DISCINID BRACHIOPODS ATTACHED TO A SOFT-BODIED ORGANISM.RICHARDS RP.1974; OHIO J. SCI.; USA; 1974, VOL. 74, NUM. 0003, P. 174 A 181Serial Issue
POPULATION DYNAMICS OF SOME PALEOZOIC BRACHIOPODS AND THEIR PALEOECOLOGICAL SIGNIFICANCE.RICHARDS RP; BAMBACH RK.1975; J. PALEONTOL.; U.S.A.; 1975, VOL. 49, NUM. 0005, P. 775 A 798Serial Issue
A LINGULA-HELIOLITES ASSOCIATION FROM THE SILURIAN OF GOTLAND, SWEDEN.RICHARDS RP; DYSON COBB M.1976; J. PALEONTOL.; U.S.A.; DA. 1976; VOL. 50; NO 5; PP. 858-864; H.T. 1; BIBL. 8 REF.; 2 ILL.Article