TY - BOOK AU - Hagel III,John AU - Armstrong,Arthur G. TI - Net gain: expanding markets through virtual communities SN - 0-87584-759-5 AV - HF5415.1265 .H34 1997 PY - 1997/// CY - Boston PB - Harvard Business School Press KW - Internet marketing KW - Customer relations N1 - Includes bibliographical references (p. 221-224) and index ER -