A number of plans were advanced for the land.

A number of theories have been advanced for the Soviet action.

A number of programs were initiated then, and advanced to full operation by 2005 including those of hostile states.

A number of theories for the Københavns disappearance have been advanced.

A number of hypotheses have been advanced to explain these issues.

A number of theories have been advanced to explain this.

A number of theories have been advanced to explain the Warburg effect.

The reason for this is unclear, although a number of hypotheses have been advanced.

A number of strong individual, but unrelated challenges were advanced.

A number of possible theoretical explanations have been advanced.