Portland Public Library
460
Resources share the relationship
sub focus
to
Research
Rockets (Ordnance) + Research -- Germany -- History -- 20th century
Life spans (Biology) + Research
Power resources + Research + Law and legislation -- United States
Antibiotics + Research
Dwellings -- United States -- Research -- Handbooks, manuals, etc
Clean energy + Research -- United States
Sex + Research -- Fiction
Ghosts + Research -- Fiction
Nuclear weapons + Research + History -- 20th century
Migratory birds + Research
1
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8
9
10