00398nam a22001337a 4500 9780470564905 371.358 LEH Lehman, Rosemary M. Creating a sense of presence in online teaching : how to "be there" for distance learners USA Jossey-Boss 2010 xiii, 143p.: 22 cm Distance education--Social aspects BK 12835 12835 0 0 0 0 NFIC CL CL GEN 2014-04-28 Grace Books 2620.57 1 371.358 LEH SEECS013170 2015-03-29 2015-03-23 2014-04-28 BK