It's possible you're thinking of:
* A specific book or work published by the government of Oman: There are likely many publications produced by the government of Oman, but without more information, it's impossible to say which one you're referring to.
* An author who is from Oman: There are many authors who are citizens of Oman, but we would need more details about their name or their works to identify them.
Could you please provide more context or details about the author or the work you're interested in?