public function getAllFromSource( $source, $strict = FALSE )
	{
		$source	= strtolower( $source );
		if( isset( $this->sources[$source] ) )
			return new ADT_List_Dictionary( $this->sources[$source] );
		if( !$strict )
			return array();
		throw new InvalidArgumentException( 'Invalid source "'.$source.'"' );
	}