8

REFERENCES
cm; 1mm, cummm Agnmllum Aldm: l'ub. Cm,
Chicago, was,

Daubenmue, m1“; F,Planls mm Emmmm u
ltxlbmkn/pldntflultwlugy. Wiky kSons, N y, 1974.

Gaga, Rude", 11.: Climate Nmr We own, ”mm
Unimsny Press, W75.

04...... um, Fundnnmmls 0/ Waxy. w. a
Blundfls, Landau, .97.

Plan, E. 1., The Aemlymnlrts .4 Sheik-16:11:, Agn‘mlrurfl
mum a, 19m

u. s Deparlmenl m’Agnmllum, Tm, USDA Yearbook
m Aylmkurt, m9.

Vngel, Stephen, W m Mm"; FIu:dJ,W1lhxd Gum
mess, 505mm.

151