The Oxford-River Books English-Thai Dictionary has been in preparation for over 10 years. It is the most comprehensive such dictionary in the world. It is the result of a unique collaboration between Oxford University Press and River Books, a Thai publishing house producing books on the history, culture and language of Thailand." "The English language material is derived from Oxford's unparalleled language resources. These resources - from the ongoing research behind the Oxford English Dictionary to the latest dictionaries and grammars of current English - inform all of Oxford's monolingual and bilingual dictionary publishing. They shape the selection of every dictionary entry, and allow Oxford dictionary compilers to identify the latest vocabulary, the most up-to-date senses, important grammatical constructions, and the most frequently used phrases and expressions.