An analysis of pear psylla populations 1977-79.

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100 1 ‡aFye, R. E. ‡q(Robert Eaton), ‡d1924-
245 1 3 ‡aAn analysis of pear psylla populations 1977-79.
260 ‡aOakland, Calif. : ‡bAgricultural Research, Western Region, Science and Education Administration, U.S. Dept. of Agriculture, ‡c1981.
300 ‡aiv, 31 p. : ‡bill. ; ‡c26 cm.
490 0 ‡aAgricultural reviews and manuals. ARM-W ‡x0913-3760 ; ‡vno. 24
500 ‡a"May 1981."
504 ‡aBibliography: p. 7-9.
538 ‡aMode of access: Internet.
650 0 ‡aPear ‡xDiseases and pests.
650 0 ‡aPsylla.
710 1 ‡aUnited States. ‡bScience and Education Administration. ‡bAgricultural Research. ‡bWestern Region.
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