Opercle (gasteròpodes) (Catalan Wikipedia)
Analysis of information sources in references of the Wikipedia article "Opercle (gasteròpodes)" in Catalan language version.
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1st place
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archive.org
- Tryon G. W. (1882). Structural and systematic conchology pàgs. 47-48
biologiezentrum.at
- Schifko G. (2005). "Zoologische Anmerkungen zu zwei minoischen Siegelabdrücken mit einem Tritonshorn (Gattung Charonia) als Motiv". Annalen des Naturhistorischen Museums in Wien 106B: 27-33
PDF
inquirewithin.biz
- Ratzel F. (1896). The History of Mankind Arxivat 2012-02-26 a Wayback Machine.. MacMillan, London
manandmollusc.net
- "Operculata". manandmollusc.net
web.archive.org
- Ratzel F. (1896). The History of Mankind Arxivat 2012-02-26 a Wayback Machine.. MacMillan, London