So far as could be learned had sold only nine scripts in four years, but no other known source of income.

Yet, this show is more than the usual synthesis of known sources.

Following this, Rogers had no known source of income until his disappearance.

They were also the only known source of food.

Since the mid-1970's, more than 170 new trees from known sources have been planted annually.

However there is no known source for this pure speculation.

But when there is a known source of lead exposure, children up to 6 should be screened.

Blito-P3 was the only known source of such drugs.

He felt like a light bulb that has suddenly received a surge of power from no known source.

Many of his stories have no other known source.