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Barrow, J.R.;Havstad, K.M.;Gibbens, R.P. 1991. “The use of alternative natural methods of reseeding arid native grasslands” : No. 354.
Carlson, S. R.;Whitford, W. G. 1991. “Ant mound influence on vegetation and soils in a semiarid mountain ecosystem” 126: 125-139.
Lightfoot, Karen S. 1991. “Associations of annual plants and shrubs in the northern Chihuahuan Desert” : 75.
Hulet, C.V.;Anderson, D.M.;Smith, J.N.;Shupe, W.L.;Murray, L.W. 1991. “Bonding of Spanish kid goats to cattle and sheep” 30: 97-103. bibliography/373.pdf.
Anderson, D.M.;Gibbens, R.P.;Hulet, C.V.;Havstad, K.M.;Estell, R.E. 1991. “Browsing arid rangeland shrubs under multispecies management strategies” : 188.
Hulet, C.V.;Anderson, D.M. 1991. “Can multi-species grazing help protect stock from coyotes?” 81: 32-33. bibliography/372.pdf.
Schlesinger, W.H.  Jager, J. (ed.) 1991. “Climate, environment and ecology”
Gibbens, R.P.;Billheimer, D.D.;Havstad, K.M.;Herbel, C.H. 1991. “Creosotebush vegetation after 50 years of lagomorph exclusion” : P63.
Tiedeman, J. A.;Beck, R.F.;Ecret, R. V. 1991. “Dependence of standing crop on range condition rating in New Mexico” 44: 602-605.
Cornelius, Joe M.;Kemp, Paul R.;Ludwig, John A.;Cunningham, Gary L. 1991. “The distribution of vascular plant species and guilds in space and time along a desert gradient” 2: 59-72.
Senock, R.S.;Barrow, J.R.;Gibbens, R.P.;Herbel, C.H. 1991. “Ecophysiology of the polyploid shrub Atriplex canescens (Chenopodiaceae) growing in situ in the Northern Chihuahuan Desert” 21: 45-57. bibliography/375.pdf.
Estell, R.E.;Havstad, K.M.;Heird, C.E.;Fredrickson, E.L.;Hallford, D.M.;Shupe, W.L. 1991. “Effect of cyclic feeding patterns on growth, serum metabolites and hormones, organ size and carcass traits of wether lambs” : No. 839.
Taylor, Stuart A. 1991. “Effects of biostimulation and method of development on cyclicity, conception rates and age at calving in beef heifers” : 57.
Ansotegui, R.P.;Havstad, K.M.;Wallace, J.D.;Hallford, D.M. 1991. “Effects of milk intake on forage intake and performance of suckling range calves” 69: 899-904. bibliography/707.pdf.
Fredrickson, E.L.;Galyean, M.L. 1991. “Effects of monensin supplementation on grazing beef cattle” 70 (12): 6-7.
Horton, J.;Pieper, R.D.;Havstad, K.M.;Wallace, J.D.;Murray, L.W. 1991. “Environmental effects on behavior and production of range cows on the Chihuahuan Desert” : No. 88.
Jorat, Saeed M. 1991. “Evaluation of hydraulic roughness coefficient from field and laboratory data” : 147.
Kattnig, Robert M. 1991. “Evaluation of range beef cattle production efficiency under semi-desert conditions” : 111.
Peterjohn, William T.;Schlesinger, William H. 1991. “Factors controlling denitrification in a Chihuahuan Desert ecosystem” 55: 1694-1701.
Schlesinger, William H.;Hartley, Anne E. 1992. “A global budget for atmospheric NH3” 15: 191-211.