Here is a description of the categories and the sort of
sites that they contain:
Biospeleology: [1] Specialist bookstores and specific books on biospeleology.
Bryology: [2] Specialist bookstores and specific books on bryology.
Herbaria: [2] Specialist bookstores and specific books on herbaria.
Palynology: [2] Specialist bookstores and specific books on palynology.
Photosynthesis: [2] Specialist bookstores and specific books on photosynthesis.
Phycology: [1] Specialist bookstores and specific books on phycology.
Phytopathology: [2] Specialist bookstores and specific books on phytopathology.
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