secondary research

noun 0.712

primary source

noun 0.707

secondary work

noun 0.704

secondary

noun 0.660

source

noun 0.635

secondary energy

noun 0.631

secondary industry

noun 0.582

reference work

noun 0.565

second opinion

noun 0.555

second hand

noun 0.540

secondary memory

noun 0.534

reference

noun 0.526

third person

noun 0.523

sourcebook

noun 0.521

indirect

noun 0.519

secondary action

noun 0.519

secondary liability

noun 0.513

double hearsay

noun 0.512

review article

noun 0.510

indirect quotation

noun 0.510

secondary metabolite

noun 0.506

reference library

noun 0.500