MERRIAM-WEBSTER´S CONCISE DICTIONARY OF ENGLISH USAGE merriam webster
A handy guide to problems of confused or disputed usage based on the critically acclaimed Merriam-Webster's Dictionary of English Usage. Over 2,000 entries explain the background and basis of usage ...
MERRIAM-WEBSTER´S MEDICAL DICTIONARY (MASS-MARKET PAPERBACK) POCKET merriam webster
A concise guide to the essential language of medicine. More than 35,000 entries. Pronunciations provided for all entries. Covers brand names and generic equivalents of common drugs.