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The effect of tree nitrogen on pear psylla, Psylla pyricola Foerster

The effect of tree nitrogen on pear psylla, Psylla pyricola Foerster

By Douglas Goode Pfeiffer

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Publish Date

1982

Publisher

-

Language

eng

Pages

80

1-1 of 1 Editions

The effect of tree nitrogen on pear psylla, Psylla pyricola Foerster

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