Ryan, R.B.; Bousfield, W.E.; Johanningmeier, C.W.; Parsons, G.B.; Schmitz, R.F.; Theroux, L.J. 1977, Releases of recently imported larch casebearer parasites for biological control in the western USA including re-locations of Agathis pumila. U.S. Forestry Service Research Note
PNW-290:1-8
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Keywords: Biological control
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