Perhaps you should try some spelling variations:
water resources » natural resources
resources book » resources boom, resource boom, source book
level studies » legal studies, event studies
from series » from sources, from service, from surveys
cold water » cold war, cold winters
toll » tool

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( harvard cold water resources book series. ) or ( harvard toll level studies from series. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( harvard cold water resources book series. ) OR ( harvard toll level studies from series. )).
• Adding a wildcard symbol may retrieve word variants: (( harvard cold water resources book series. ) or ( harvard toll level studies from series. ))*.