na INLIS000000000003955 20240923125117 0010-0924000073 Editor, Thor Kommedahl PROCEEDINGS of Symposia IX International Congress of plant protection, Washington, DC.U.S.A., August 5-11, 1979 : Vol. 2 (Integrated Plant Protection for Agricultural Crops and Forest Trees) / Thor Kommedahl 413-629 p. : ills. ; tab. ; 28 cm. 632 PRO Minneapolis, Minnesota : Burgess, 1981 PLANT PROTECTION, SYMPOSIA IX, WASHINGTON, DC, USA, 1981, PROSIDING PERLINDUNGAN TANAMAN 091/1981