[Studies on parasitic Hymenoptera on orchard pests. I. The parasites of Molorchus umbellatarum Schreber (Col., Cerambycidae) on apple trees.] (in Polish with English and German summaries)

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith