<bibl xml:id="Sowerby_1809">
                    <author>
                        <name type="person" subtype="aut" ref="gnd:124329810">Sowerby, James</name>
                    </author>
                    <title level="m" type="main" xml:lang="eng">A New Elucidation of Colours,
                        Original Prismatic, and Material; showing Their Concordance In Three
                        Primitives, Yellow, Red, and Blue; and The Means Of Producing, Measuring,
                        And Mixing Them : with Some Observations on The Accuracy of Sir Isaac
                        Newton</title>
                    <pubPlace>
                        <name type="place" subtype="pup">London</name>
                    </pubPlace>
                    <publisher>Richard Taylor and Co.</publisher>
                    <date type="pub" when="1809">1809</date>
                    <extent>[1], 51 S. : 7 Taf.</extent>
                    <relatedItem type="onlineedition">
                        <ref target="https://www.biodiversitylibrary.org/item/238246#page/5/mode/1up">Elektronische Version:
                            https://www.biodiversitylibrary.org/item/238246#page/5/mode/1up</ref>
                    </relatedItem>
                    <note type="citation-string">SOWERBY, James: A New Elucidation of Colours,
                        Original Prismatic, and Material; showing Their Concordance In Three
                        Primitives, Yellow, Red, and Blue; and The Means Of Producing, Measuring,
                        And Mixing Them : with Some Observations on The Accuracy of Sir Isaac
                        Newton,. London : Printed by Richard Taylor and Co, 1809</note>
                </bibl>