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- [1] GERMINATION TESTS OF THE VIABILITY OF APPLE POLLEN GATHERED IN PELLETS PROCEEDINGS OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE, 1949, 53 (MAY): : 153 - 157
- [4] Comparisons of pollen removal and deposition by honeybees and bumblebees visiting apple SEVENTH INTERNATIONAL SYMPOSIUM ON POLLINATION - POLLINATION: FROM THEORY TO PRACTISE, 1997, (437): : 103 - 107