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by SMITH P DAVID
by Roland, Charles P.; Smith, John David
by Smith, David P.; Corduan, June; Strange, Alan
by Smith, David P.
by Smith, David P.; Keyfitz, Nathan; Wachter, Kenneth W.; et al.
by Lotka, Alfred J.; Smith, David P.; Rossert, Hélène
by Smith, David P
by Smith, John David; Appleton, Thomas H.; Roland, Charles P.