The chemistry and analysis of hop and beer bitter acids / by M. Verzele and D. De KeukeleireA pharmacognostical study of hop, Humulus lupulus L. / Carlos Roberto LangezaalHop hop hoera : hopteelt, hopfeesten, hopfolklore / René De RopCharacterization of cell suspension cultures of hop, Humulus lupulus L. / Maria Teresa Salles TrevisanSpeuren naar sporen van de hopteelt in Peize / door Geert Rossing ; [ill.: G. Rossing]A checklist of some Cannabaceae cultivars / by Wim SnoeijerA checklist of some Cannabaceae cultivars / Wim SnoeijerBeer spoilage bacteria and hop resistance in Lactobacillus brevis / Kanta SakamotoBeer spoilage bacteria and hop resistance in Lactobacillus brevis / Kanta SakamotoStudies of iso-α-acids : analysis, purification, and stability / Alfi KhatibStudies of Iso-α-acids : analysis, purifacation, and stability / Alfi Khatib