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  1. 21602171010
    Author(s):Petersen, W.
    Title:Entstehung der Arten durch physiologishe Isolierung.
    Subject(s):Species
    Journal Title Abbreviation:Biol. Centralbl.
    Place of Publication:Leipz.
    Date of Publication:1903
    Pagination:xxiii, 468–477.
    Reference Note:See, also, supra, Jordan.
    Language:German
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
  2. 21602171020
    Author(s):Petersen, W.
    Title:Ueber indifferente Charaktere als Artmerkmale.
    Subject(s):Species
    Journal Title Abbreviation:Biol. Centralbl.
    Place of Publication:Leipz.
    Date of Publication:1904
    Pagination:xxiv, 423; 467.
    Language:German
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
  3. 21602171030
    Author(s):Petersen, W.
    Title:Ueber beginnende Art-Divergenz.
    Subject(s):Species
    Journal Title Abbreviation:Arch. f. Rassen- u. Gesellsch.-Biol.
    Place of Publication:Berl.
    Date of Publication:1905
    Pagination:ii, 641–662.
    Language:German
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
  4. 21602171040
    Author(s):Porsch, O.
    Title:Die deszendenztheoretische Bedeutung sprunghafter Blütenvariationen und korrelativer Abänderung für die Orchideenflora Südbrasiliens.
    Subject(s):Species
    Journal Title Abbreviation:Ztschr. f. indukt. Abstammungs- u. Vererbungsl.
    Place of Publication:Berl.
    Date of Publication:1908
    Pagination:i, 69; 194; 352.
    Language:German
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
  5. 21602171050
    Author(s):Powers, J. H.
    Title:Are species realities or concepts only?
    Subject(s):Species
    Journal Title Abbreviation:Am. Naturalist
    Place of Publication:Lancaster, Pa.
    Date of Publication:1909
    Pagination:xliii, 598–610.
    Language:English
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
  6. 21602171060
    Author(s):Samter, M.
    Title:Die geographische Verbreitung von Mysis relicta, Pallasiella quadrispinosa, Pontoporeia affinis in Deutschland als Erklärungsversuch ihrer Herkunft.
    Subject(s):Species
    Journal Title Abbreviation:Abhandl. d. k. preuss. Akad. d. Wissensch.
    Place of Publication:Berl.
    Date of Publication:1905
    Pagination:Anh., Abhandl. v, 1–34, 6 pl.
    Language:German
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
  7. 21602171070
    Author(s):Schopenhauer, A.
    Title:Leben der Gattung.
    Subject(s):Species
    In Note:In his: Sämmtliche Werke8°Leipz.[n. d.]ii, 599–607.
    Language:German
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
  8. 21602171080
    Title:Searching for the real origin of species.
    Subject(s):Species
    Journal Title Abbreviation:Scient. Am.
    Place of Publication:N. Y.
    Date of Publication:1906
    Pagination:xcv, 171; 174.
    Language:English
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
  9. 21602171090
    Author(s):Shull, G. H.
    Title:Elementary species and hybrids of Bursa.
    Subject(s):Species
    Journal Title Abbreviation:Science
    Place of Publication:N. Y. & Lancaster, Pa.
    Date of Publication:1907
    Pagination:n. s., xxv, 590.
    Language:English
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
  10. 21602171100
    Author(s):Smith, J. B.
    Title:The first species rule.
    Subject(s):Species
    Journal Title Abbreviation:Science
    Place of Publication:N. Y. & Lancaster, Pa.
    Date of Publication:1907
    Pagination:744.
    Language:English
    Type of Resource:Analytic
    Series/Volume/Page:Series 2/Volume 16/Page 217
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