Japanese Sign Language Dictionary is an example-based dictionary that lets readers look up sign-language expressions from Japanese words. With more than 8,000 headwords, abundant example sentences, and illustrations for each entry, it helps readers learn how expressions vary with context.

A full-scale dictionary that traces how the same word can take different sign-language expressions through examples and illustrations.

A Morphological Study of Reduplicated Words in Japanese is a work of Japanese linguistics that systematically examines the structure of reduplicated words, including reduplicative forms, chiefly through examples from Old and Early Middle Japanese. It also considers later examples to trace how words are formed and how their patterns appear from the perspective of word formation theory.

A study that uses examples from earlier Japanese to illuminate the structure and range of reduplicated words.

A scholarly study that reads historical documents and records reflecting regional speech, using dialect research to reconsider the history of Japanese. It examines the value of local linguistic sources and approaches the history of Japanese, including the central language tradition, from a fresh perspective.

A study that illuminates the history of Japanese through documents preserving regional speech.