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<http://id.loc.gov/resources/works/4618786> <http://id.loc.gov/ontologies/bflc/aap> "Aleby, Stig Solid state behaviour of long-chain esters" .
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<http://id.loc.gov/resources/works/20791257> <http://id.loc.gov/ontologies/bflc/aap> "Bernstein, Joel, 1941-2019 Polymorphism in molecular crystals" .
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<http://id.loc.gov/resources/works/769151> <http://id.loc.gov/ontologies/bflc/aap> "Brækken, Heakon, 1902- Some observations of WO₃ polymorphism" .
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<http://id.loc.gov/resources/works/4572852> <http://id.loc.gov/ontologies/bflc/aap> "Jenkins, E. W. (Edgar William) The polymorphism of elements and compounds" .
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<http://id.loc.gov/resources/works/17962680> <http://id.loc.gov/ontologies/bflc/aap> "Liquid polymorphism" .
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<http://id.loc.gov/resources/works/21550057> <http://id.loc.gov/ontologies/bflc/aap> "Ohta, Kazuchika Physics and chemistry of molecular assemblies" .
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