Mosby Medical Encyclopedia, The Signet
Subtitle: Revised Edition
Contributors: Walter D. Glanze (Editor); Kenneth N. Anderson (Editor)
Publisher: Signet
Published: February 1, 1996
Language: eng
Number of pages: 912
ISBN-13: 9780451184092
First sentence: aa, aa, AA, (in prescriptions) abbreviation for ana, meaning equal amounts of each ingredient.