Monograph (noun)

A scholarly or scientific treatise or paper on a single subject, especially a single species of organism.

Origin:

Mid 19th century: from mono- "single" + -graph.

Examples:

1. The monograph was a comprehensive study of the behavior of whales.
2. The scientist published a monograph on the mating habits of penguins.
3. The monograph provided an in-depth analysis of the species' habitat and biology.
4. The professor wrote a monograph on the history of the ancient civilization.
5. The monograph was well-received by the academic community for its thorough research.