TY - BOOK AU - Keller,Peter AU - Bieger,Thomas AU - Aho,Seppo TI - Marketing efficiency in tourism: coping with volatile demand T2 - International tourism research and concepts SN - 9783503097241 (pbk.) U1 - 338.4791 PY - 2006/// CY - Berlin PB - Erich Schmidt Verlag KW - Tourism KW - Marketing N1 - On cover: International Association of Scientific Experts in Tourism (AIEST); Includes bibliographical references ER -