Our secret friends and foes.
Subtitle: Expanded from lectures delivered before popular audiences in London, Edinburgh, and elsewhere
By: by Percy Faraday Frankland.
Contributors: Society for Promoting Christian Knowledge (Great Britain). General Literature Committee.
Edition: 4th ed., rev. and enl.  Published under the direction of the General Literature Committee.
Series: Romance of science
Publisher: Society for Promoting Christian Knowledge
Published: 1899
Place of publication: London
Language: eng
Number of pages: 265
Subjects: Microorganisms.