Free Access Nature of brood signal activating the protein synthesis of hypopharyngeal gland in honey bees, Apis mellifera (Apidae : Hymenoptera) p. 455 Z.-Y. Huang, G.W. Otis and P.E.A. Teal DOI: https://doi.org/10.1051/apido:19890601 PDF (584.2 KB)
Free Access A comparison of package and nucleus production from honey bee (Apis mellifera L.) colonies p. 465 E.N. Punnett and M.L. Winston DOI: https://doi.org/10.1051/apido:19890602 PDF (593.8 KB)
Free Access Bestimmung von Transferfaktoren von Caesium in der Kette Boden—Rapspflanze—Rapsblüte—Rapshonig p. 473 D. Molzahn, A. Klepsch and U. Assmann-Wertmüller DOI: https://doi.org/10.1051/apido:19890603 PDF (537.9 KB)
Free Access How honey bees forage for pollen at skunk cabbage, Symplocarpus fœtidus (Araceae) p. 485 P.G. Kevan DOI: https://doi.org/10.1051/apido:19890604 PDF (390.6 KB)
Free Access Working Group of the Apicultural Institutes in Western Germany. Report on the Meeting at Freiburg, 5-7 October 1988 p. 491 DOI: https://doi.org/10.1051/apido:19890605 PDF (2.683 MB)
