671 A.A.V.V. Minutes of proceedings of the institution of civil Engineers(Forrest J. – vol.XCIII) London (1888); (1515) Q.I.20
672 A.A.V.V. Minutes of proceedings of the institution of civil Engineers(Forrest J. – vol.XCIV) London (1888); (1516) Q.I.21
657 A.A.V.V. Minutes of proceedings of the institution of civil Engineers(Forrest J. – vol.LXXIX) London (1885); (1501) Q.I.6
658 A.A.V.V. Minutes of proceedings of the institution of civil Engineers(Forrest J. – vol.LXXX) London (1885); (1502) Q.I.7
659 A.A.V.V. Minutes of proceedings of the institution of civil Engineers(Forrest J. – vol.LXXXI) London (1885); (1503) Q.I.8
