1. Unified Theories of Programming
by Hoare CAR. C. A. 
Price: USD 91.33
Dealer: Biblio, Anybook.com
Description: Prentice Hall, Date: 1998. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,600grams, ISBN:9780134587615 1998. Prentice Hall ISBN 0134587618 9780134587615 [GB] 

2. Unified Theories of Programming
by Hoare, C.A.R. 
Price: USD 101.87
Dealer: Alibris, Anybook.com via Alibris
Description: Prentice Hall 1998 Paperback This is an ex-library book and may have the usual library/used-book markings inside. This book has soft covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item, 600grams, ISBN: 9780134587615. 

3. Unified Theories of Programming
by Hoare, C.A.R. 
Price: USD 92.88
Dealer: AbebooksUK, Anybook.com
Description: ISBN10: 0134587618, ISBN13: 9780134587615, [publisher: Prentice Hall] Softcover This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,600grams, ISBN:9780134587615 [Lincoln, United Kingdom] [Publication Year: 1998]  

4. Unified Theories of Programming
by Hoare, C.A.R. 
Price: USD 86.15
Dealer: ZVAB, Anybook.com
Description: ISBN10: 0134587618, ISBN13: 9780134587615, [publisher: Prentice Hall] Softcover This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,600grams, ISBN:9780134587615 [Lincoln, United Kingdom] [Publication Year: 1998]