He became the first editor of the Parents' Association Newsletter, a valuable complement to the School Magazine.
RI-based valuation is therefore a valuable complement to more traditional techniques.
"Tastings of Greenaway" is a valuable complement and a caution.
The television special offers a "just the facts, ma'am" gloss, which makes it a valuable complement to the film.
But it can be a valuable complement to medication.
Unlike some midwives, she welcomed technology as a valuable complement to the traditional skills she practiced; in Stockholm, for example, she studied a vacuum-extraction delivery method.
Such botanical macrofossil data provide a valuable complement to pollen and faunal data that can be used to reconstruct the prehistoric terrestrial environment.
Computer programs can never replace reading books, singing songs or working with alphabet blocks, but they are a valuable complement to these activities.
Giving the European political parties a legal status is a valuable complement to the constitutionalisation of the Treaties.
Many museums and classrooms found the tool to be a valuable complement to learning material on natural selection and ecosystems.