Webster’s asserts that color is “a phenomenon of light or visual perception that enables one to differentiate otherwise identical objects,” and then goes on to say that the Latin root is celare, “to conceal.” It’s a fine definition, because human perception of color is seamless to the extent that it conceals from us almost every causal detail. This talk will discuss common sources of light, the...

PETRI, S. (1937).-Acta Med. Scand., Vol. XCIII, p. 450. PIRIE, A. (1943).-Brit. JI. QOphthal.. Vol. XXVII, p. 291. POCK-STEEN, P. H. (1939).-Ji. Amer. Med Assoc., Vol. CXIII, P. (Abstract). POLLAK, H. (1943).-Trans. Ophthal. Soc. U.K., Vol. LXIII, p. 69. RHOADS, C. P. (1941).-Jl. Nat. Cancer Inst., Vol. I, p. 511. SEBRELL, W. H. and BUTLER, R. E. (1§39).-Public Health Rep., Vol. LIV, p 2882. SH...

In this study, considering the importance of incremental capital output ratio (ICOR) in agriculture Investment capital and self-sufficiency in this sector in order to grow and being influenced by the past and previous relationships strong agricultural sector productivity growth in other sectors of the economy, especially the effect of oil revenues, was trying to, long-term relationships as well...