Panbiblion Principia mathematica, vol. 1 (of 3) Whitehead, Alfred North and Russell, Bertrand Principia mathematica, vol. 1 (of 3) / *81. SELECTIONS FROM MANY-ONE RELATIONS. *81. SELECTIONS FROM MANY-ONE RELATIONS. Project Gutenberg EPUB3 edition Whitehead, Alfred North and Russell, Bertrand Open passage Copy text Copy link Read aloud *81·3. Open passage Copy text Copy link Read aloud Dem. Open passage Copy text Copy link Read aloud *81·31. Open passage Copy text Copy link Read aloud Dem. <12>
