Now out of print, this crucial resource has become extremely hard to find, with online booksellers charging up to $2,000 a copy.

For them the library is a crucial resource, providing opportunities to discover, learn and move on.

The same can be said for the register file, another crucial shared resource.

And the painful facts of a faulty, crucial resource are hard to refute when seen up close.

Despite cutbacks by a few financial services companies, the surviving employees are regarded as what she calls a "crucial resource."

The staff was heroic in its efforts but lacked many crucial resources.

For Clowes, a crucial resource was a pile of old comics that his much older brother, James, left behind.

Some crucial resources - especially educated personnel and modern equipment - still were in very short supply because of the sheer size of the economy.

Thus began the peeling away of resources crucial to the nation's fight against its most fervent enemy, Al Qaeda.

His analyses of the country's problems have been a crucial resource for the opposition over years of political isolation.