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
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