00871cam a2200277 4500 275664740 TxAuBib 20120616120000.0 100830s2011||||||||||||||||||||||||eng|u 2010035242 9781433946516 library binding 1433946513 library binding 9781433946523 pbk. 1433946521 pbk. DLC DLC TxAuBib Hoffman, Mary Ann, 1947- Helping dogs / Mary Ann Hoffman. New York : Gareth Stevens Pub., 2011. p. cm. Working dogs Includes index. Helping dogs -- Service dogs -- Therapy dogs -- Making life better. 20120616. Service dogs. Working dogs.