Alec Watt

• Longman illustrated dictionary of geology
• The Barnes & Noble thesaurus of geology
• Diccionario Ilustrado Geologia Everest
• Lang-wen Ying Han ti chih tʻu chieh tzʻu tien =
• Diccionario Ilustrado de la Geologia
• Illustrated dictionary of geology
• Illustrated Dictionary of Geology in English With English-Arabic and Arabic English Glossaries
• The Barnes & Noble thesaurus of geology