Architectural Press; 1 edition (July 9, 2004) / ISBN 0750663235 / 240 pages / PDF / RS / 10MBPractical aspects with guiding for applying natural light inside building. Very good source for learn how to reduce total consume building power usage.
Link:
http://rapidshare.com/files/126717807/Natural_Light_in_Architecture_-_0750663235.pdf
Enjoy and have a nice day.