Directed by Satyajit Ray, the Apu Trilogy films - 'Pather Panchali', 'Aparajito' and 'Apur Sansar' - were based on the novels of which Bengali writer ?
"The Treasure of the Sierra Madre" (1927), on which the multi-award winning 1948 American film was based, was written under the pen-name B. Traven by someone understood to be of what nationality?
