The world's food
1917
vii, 313 p., 25 cm "This volume of the Annals constitutes the Proceedings of the Conference on the world's food, held by the Academy in Philadelphia on September 14 and 15, 1917."--Foreword
vii, 313 p., 25 cm "This volume of the Annals constitutes the Proceedings of the Conference on the world's food, held by the Academy in Philadelphia on September 14 and 15, 1917."--Foreword