A condensed summary compiling information about a particular field of knowledge is a

a. compendium
b. compliance manual
c. treatment guidelin
d.pharmacopeiae

http://www.thefreedictionary.com/compendium

a. compendium

The correct answer is a. compendium.

To arrive at this answer, let's first look at the options:

a. compendium: A compendium is a concise summary or compilation of information in a particular field of knowledge. It is a comprehensive collection of various resources condensed into a single source. This seems to be the most appropriate option based on the given definition.

b. compliance manual: A compliance manual refers to a document that outlines rules, regulations, policies, and procedures that an organization or industry must adhere to in order to comply with certain standards or requirements. While it may contain some information in a specific field, it is not primarily focused on compiling knowledge.

c. treatment guideline: A treatment guideline is a document that provides guidance and recommendations for healthcare professionals on how to diagnose and manage various medical conditions. It primarily focuses on treatment protocols, rather than compiling knowledge in a specific field.

d. pharmacopeiae: Pharmacopeiae refers to the official publications that provide standards for the identification, quality, purity, and strength of medicines. While it is related to a specific field (pharmaceuticals), it is more specific to the standards of medications rather than a condensed summary of knowledge.

Therefore, the most appropriate answer is a. compendium, as it accurately describes a condensed summary compiling information about a particular field of knowledge.