BUNNIK, N.J.J., 1978, "The multispectral reflectance of 
shortwave radiation by agricultural crops in relation 
with their morphological and optical properties", Comm. 
Agricultural Univ. Wageningen, The Netherlands, 78(1), 
176 p. 
11 KRIEBEL, K.T., "On the Variability of the Reflected Ra- 
diation Field due to Differing Distribution of the Irra- 
d Remote Sensing of Environment, 4, 257-264 
1976 ). 7 
12 EGBERT, D.D., WABY, F.T., "The Effects of Angles on 
Reflectivity", Photogrammetric Engineering, pp 556-564, 
1972. 
- 13 SALMONSON, V.V., "Airborne Measurements of Reflected 
Solar Radiation", Remote Sensing of Environment, Vol. 2, 
N° 1, pp 1-9, January, 1971. 
14 DUNTLEY, S.Q., "Detection of Ocean Chlorophyll from ; 
Earth Orbit", 4th Annual Earth Resources Program Review, 
Vol. 4, Section 102, January, 1972.