അർത്ഥം : United States writer whose novels argued for social reform (1878-1968).
പര്യായപദങ്ങൾ : upton beall sinclair, upton sinclair
അർത്ഥം : English electrical engineer who founded a company that introduced many innovative products (born in 1940).
പര്യായപദങ്ങൾ : clive sinclair, sir clive marles sinclair