IESNA guide for directional positioning of photometric data
By: prepared by the Angular Positioning Sub-Committee of the IESNA Computer Committee.
Contributors: IESNA Computer Committee. Angular Positioning Sub-Committee.
Series: IES; LM-72-97; IESNA lighting measurements series -- LM-72-97.
Publisher: Illuminating Engineering Society of North America
Published: 1997
Place of publication: New York, NY
Language: eng
Number of pages: 10
Subjects: Photometry -- United States
Other titles: Guide for directional positioning of photometric data.; Directional positioning of photometric data.
Notes: Cover title.

"Approved by the IESNA Board of Directors, August 17,1997 ..."

Includes bibliographical references.