He had had much trouble in discovering the proper formula, for each type of organism was found to need a stimulus especially adapted to it.

"In," I echoed him, resigned to proper formula.

After generations of conflict, peace between Israel and its Arab neighbors is not simply a matter of a proper formula.

It gives instructions on constructing a similar brass vessel, and using the proper magic formulae to safely call up those demons.

What is the proper formula for greeting the first ambassador of an alien planet?

Then make up the proper formula.

I need to look up the proper formula in one of the books in my father's tower, that's all.

"We believe that the proper formula for seeding, and null-gee laboratories floating at the critical levels, could make this possible," I said.

I hope we will find a way to talk informally or in committee later on the proper formula.

With more submission than when he was a school-boy, the captain sat down and endeavored to recall the proper formula.