by AL Shigo · Cited by 68 — by Alex L. Shigo a tenth of the planet's surface, trap about half of all the ... the underpinnings of modern biolo- gy were established a century ago. It seems a trite ...
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modern arboriculture shigo pdf
teacher and mentor, Alex L. Shigo; to the alchemy of Joni Doherty; ... scientific rigor required: Alex L. Shigo, William H. Smith, Kevin T. ... Modern Arboriculture.. Based on Modern Arboriculture by. Dr Alex Shigo 1991. Shigo & Trees, Associates. The Tree Care Division ETS. ETS Target Pruning Manual. Based on Modern .... In the UK, the work of major influences in modern arboriculture such as SHIGO (​1991), MATTHECK (1991)and RAYNER (1993) has not only served to clarify ... 939c2ea5af