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Arboriculture & Urban Forestry Online
| Vol. 17, No. 9 | Contents | September 1991 |
| The Cost of Shade: Cost-Effectiveness of Trees Versus Bus Shelters (View PDF) | ||
E. Gregory McPherson and Sharon Biedenbender | ||
| Effects of a Deep Layer of Mulch on the Soil Environment and Tree Root Growth (View PDF) | ||
Gary W. Watson and Gary Kupkowski | ||
| Bacterial Species in Relation to Forest Tree Decline (View PDF) | ||
M. Scortichini, A. Belisario, and E. Motta | ||
| The California Tree Failure Report Program: An Overview (View PDF) | ||
L. R. Costello and A. M. Berry |
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