"numerous contributions" is a correct and usable phrase in written English.
You can use it when referring to a variety of different kinds of contributions, such as charitable donations or creative works. For example, "John Smith has made numerous contributions to the preservation of endangered wildlife."
Thus, in addition to Russell's numerous contributions to the politics of his day, he also contributed significantly to our understanding of the social world around us.
He left the world a better place due to his numerous contributions.
They have made major discoveries and numerous contributions to the field of sleep medicine.
Among his numerous contributions, Moholy-Nagy introduced a theoretical approach to visual communications.
This was just one aspect of Rabin's numerous contributions to the fields of cryptography and data encryption.
Mittag-Leffler made numerous contributions to mathematical analysis (concerned with limits and including calculus, analytic geometry, and probability theory).
His numerous contributions to the medical literature and his acclaim to research in myasthenia gravis serve as many of the hallmarks of medicine.
Furthermore, numerous contribution to the scientific international literature highlight the need to modify the therapeutic approach, directing it towards a semeiotic criterion (pain phenothype: specific sign and symptoms of a certain type of pain in a specific moment), which is an epiphenomenon of underlyng pathogenetic mechanism, instead of basing it on a etiologic criterion[5].
The fact that Virginia has no campaign contribution limits means that the former DNC and Clinton money man is able to accept numerous individual contributions in excess of $100,000 from the same big dollar donors that helped to nearly sink the DNC during his disastrous tenure.
She will be remembered for her sense of humor, elegance and numerous volunteer contributions.
He played all the instruments on Art Garfunkel's I Only Have Eyes for You and made numerous instrumental contributions to Garfunkel's 1975 album Breakaway.
