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Bester, J. and Kruger, D. 2014. The use of ultrasonic pulse velocity measurements to monitor the effectiveness of concrete patch repairs. Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt;. 33, 1 (Nov. 2014), 6 bladsye. DOI:https://doi.org/10.4102/satnt.v33i1.788.