Utah Science Vol. 30 No. 2, June 1969

Estimated costs of raising dairy heifers from birth to freshening, R. C. lamb and L. L. Perkes 27 New weed menaces desert ranges 31 Aging animals by tooth cementum, Stephen J. Montgomery 32 Utah\u27s farmland assessments act of 1969, Rondo A. Christensen 33 The ecologies of Utah\u27s watery lands, J. B. Lon and Lois M. Cox 36 Tourist spending patterns in Utah, Perry J. Brown 44 Wildlife notes 47 Problems involved in the early summer seeding of fall wheat, W. G. Dewey and R. F. Nielson 4