Relativity in illustrations / Jacob T. Schwartz ; designed and illustrated by Felix Cooper. Schwartz, Jacob T. Relativity (Physics) Popular works. QC6 .S436 530.11 SCR Copy 2 : imperfect copy : p. 116-117 wanting. New York : New York University Press, 1962. 1962. 1962 Text vii, 117 p. : eng