...Subspecific assignments have been made only when there is evidence ofintergradation...
John D. Lynch 「A Taxonomic Revision of the Leptodactylid Frog Genus Syrrhophus Cope」
...The followingclassifications and assignments may, therefore, in some instances, bequestioned...
John C. Van Dyke 「A Text-Book of the History of Painting」
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scholars peasant advantage
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