Robuta

https://www.dummies.com/article/home-auto-hobbies/games/puzzles/cryptograms/cryptography-101-basic-solving-techniques-for-substitution-ciphers-195424/
substitution cipherscryptographybasicsolvingtechniques
https://openlibrary.org/subjects/substitution_ciphers
Open Library is an open, editable library catalog, building towards a web page for every book ever published. Read, borrow, and discover more than 3M books for...
substitution ciphersopen library