LIBROS DEL AUTOR: jerry r sprague

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  • Juvenile Wood in Forest Trees
    Bruce J. Zobel / Jerry R. Sprague
    The trend in forestry is toward shorter rotations and more complete utiliza­ tion of trees. The reasons are: (1) financial pressures to obtain rapid returns on the forestry investment made possible by an earlier harvest; (2) enforced harvest of young plantations to maintain a continuing supply of cellulose for mills where wood shortages are experience...
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    133,78 €