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RISVEM: D3 - REVISIONE CRITICA DELLO STATO DELL’ARTE DELLA RICERCA Data: 31/03/2004Documento: RS_01_D3-1.1 Pagina 98 di 238Watson G.W., E.B. Himelick, 1997. Principles and practice of planting trees andshrubs. International Society of Arboriculture. pag.35-80.Watson, G., and G. Himelick. 1998. The planting basics. Amer. Nurs., May 15:40-44.Whitcomb C.E., 1975. Effect of soil amendments on growth of silver maple trees in thelandscape. Proc. SNA Res. Conf. 20: 49-51.Vavassori A., 1998. Piante perfette. Acer, 5 :73-77.

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