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1. Southwestern Laboratories one day cement test card Southwestern Laboratories one day cement test card One day report from Southwestern Laboratories for the cement used by Don Hall in the construction of the Houston Negro Hospital.
2. Southwestern Laboratories one day cement test card Southwestern Laboratories one day cement test card One day report from Southwestern Laboratories for the cement used by Don Hall in the construction of the Houston Negro Hospital.
3. Southwestern Laboratories final report of tests of cement Southwestern Laboratories final report of tests of cement Southwestern Laboratories final report of tests of cement for cement from Trinity Portland Cement Company in Dallas used in the Houston Negro Hospital.
4. Southwestern Laboratories 28 day report of tests of cement Southwestern Laboratories 28 day report of tests of cement Southwestern Laboratories 28 day report of tests of cement for cement from Trinity Portland Cement Company in Dallas used in the Houston Negro Hospital.
5. Southwestern Laboratories 7 day report of tests of cement Southwestern Laboratories 7 day report of tests of cement Southwestern Laboratories 7 day report of tests of cement for cement from Trinity Portland Cement Company in Dallas used in the Houston Negro Hospital.
6. Southwestern Laboratories report of tests of cement Southwestern Laboratories report of tests of cement Southwestern Laboratories report of tests of cement for cement from Trinity Portland Cement Company in Dallas used in the Houston Negro Hospital.
7. Southwestern Laboratories one day cement test card Southwestern Laboratories one day cement test card One day cement test card from Southwestern Laboratories for the cement used by Don Hall in the construction of the Houston Negro Hospital.
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results 1-7 of 7 item(s)  page 1 of 1 : ( <<  1  >> ) :: previous : next