III · Science
Yes--no, stop--go
Subjects
Symbolic and mathematical Logic · Switching theory · Mathematics · Logic, Symbolic and mathematical · Juvenile literature · Logic, symbolic and mathematical
Language
ENG




![Cover of [William Wheeler Hubbell, authorized to apply for patents.] by United States. Congress. Senate. Committee on Patents](https://covers.openlibrary.org/b/id/10200621-M.jpg)
