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	1.	No cover image available No cover image available Studies in abstract families of languages/ by Seymour Ginsburg, Sheila Greibach [and] John Hopcroft. by Ginsburg, Seymour, 1927- Greibach, Sheila, 1939- Hopcroft, John E, 1939- Series: Memoirs of the American Mathematical Society ; no. 87 Publication details: Providence, R.I.: American Mathematical Society, 1969 Availability: Items available for loan: Castorina (1). Place hold Add to cart (remove)
	2.	Introduction to automata theory, languages, and computation/ John E. Hopcroft, Jeffrey D. Ullman. by Hopcroft, John E, 1939- Ullman, Jeffrey D, 1942- [joint author.] Series: Addison-Wesley series in computer science and information processing Publication details: Reading, Mass.: Addison-Wesley, c1979 Availability: Items available for loan: Castorina (1)Call number: 004.015 H791i 1979 IMPA. Found in Open Library: Place hold Add to cart (remove)

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