Missouri Academy of Science
Transactions

Volume 20
Editor: John R. Jones

Distribution of forestland in Missouri - N.F. Giessman, T.W. Barney,T.L. Haithcoat,J.W. Myers and R. Massengale	5

New and noteworthy macrolichens from Missouri - D. Ladd and G. Wilhelm	15

Cytological differentiation of gray treefrogs from Missouri - B.U. White E. van der Horst and R. Powell	23

A qualitative study of fish-amphibian interactions in 3 Missouri ponds - O.J. Sexton and C. Phillips	25

The golden wedding: 50 years of cooperative endeavor at the Missouri Cooperative Fish and Wildlife Research Unit - S. Clark and T.S. Baskett	37

Fall foods and nutrition of ruffed grouse in Missouri - F.R. Thompson and E.K. Fritzell	45

Nesting Ecology of northern harriers in southwest Missouri - B.R. Toland	49

Effectiveness of lithium chloride induced taste aversions in reducing waterfowl nest predation - S.E. Sheaffer and R.D. Drobney	59

Ostracode paleoecology of some Middle Devonian beds in the Wittenberg Trough of southeastern Missouri and southwestern Illinois - G.H. Fraunfelter	65

Photoreflectance study of GsAs/Al GaAs multiple quantum wells - A. Kangarlu, Y.M. Kapoor,H.R. Chandrasekhar and M Chandrasekhar	73

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