Keywords :
conchiolins of fossil Molluscan shells; animal proteins; geological ages; external skeletons of Graptolites; marine organisms; paleozoic age; Graptoloidea; Pristiograptus gotlandlicus; Pristiograptus dubius; Climacograptus typicalis; Monograptidae; Climacograptus; electron microscope; chomatograms of the hydrolysates; glucosamine; cellulose
Scopus citations®
without self-citations
12