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H. G. Hundley has written:
'List of trees, shrubs, herbs and principal climbers, etc'
'List of trees, herbs and principal climbers, etc'
There is a list of British climbers who have reached the summit of Mount Everest at the link I have given.
A pack of climbers
Climbers - novel - was created in 1989.
A collective noun is a party of climbers.