共 4 条
[2]
Pollinators as bioindicators of the state of the environment: species, activity and diversity[J] . Peter G Kevan.Agriculture, Ecosystems and Environment . 1999 (1)
[4]
Flower handling efficiency of bumble bees: morphological aspects of probing time[J] . Lawrence D. Harder.Oecologia . 1983 (1)