Illumination engineering for energy efficient luminous environments
Helms, Ronald N.
Illumination engineering for energy efficient luminous environments Ronald N. Helms. - Englewood Cliffs, N. - xiii, 322 p. :ill. ;25 cm.
Includes bibliographical references and index.
0134508092
Electric lighting.
Lighting.
Electric power -- Conservation.--TK
TK4175.H45
Illumination engineering for energy efficient luminous environments Ronald N. Helms. - Englewood Cliffs, N. - xiii, 322 p. :ill. ;25 cm.
Includes bibliographical references and index.
0134508092
Electric lighting.
Lighting.
Electric power -- Conservation.--TK
TK4175.H45