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*Nature's Garden, an aid to knowledge of our wild flowers
and their insect visitors N.Blanchan pp 415 hc (omslag met gestyleerde
irissen) William Heinemann London, 1900
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| Flore mellifère de la France de la Suisse
et de la Belgique E.Alphandérie pp 340 pb Paris, 1935 |
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| Bloemen: Lokkende signalen A.Bertsch pp 143
hc (D.1975) Bosch & Keuning Baarn, 1977 |
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| Beste bijen, hoe leer ik jullie kennen. Cursusboek
J.J.Speelziek pp 133 (drachtplanten pp 119 - 133) VBB 1979 |
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| Drachtplantengids voor de bijenteelt L.G.M.Hensels
pp 117 hc Pudoc Wageningen, 1981 |
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