00722nam a22002537a 4500 5544 5544 6687 BD-DhUAP 20201214161617.0 201213s1991 ilua b 001 0 eng 0026757540 0026757559 0026757567 DLC DLC BD-DhUAP eng 624.1834 GRA 23 Gray, John. Construction technology : today and tomorrow / John Gray. Illinois : Glencoe, c1991. 144 pages : illustrations ; 28 cm. Teacher's Resource Guide. Concrete construction. Civil engineering Concrete. Construction Technology. ddc BK 0 0 ddc 0 0 UAPCL UAPCL General Stacks 2020-12-14 624.1834 GRA 3010006687 2020-12-14 1 2020-12-14 BK