52. Amended by G.N., EST. 1368/691-III, dated 12th April 1971 (M.G., Pt. IV-B, P.508)
53. Amended by G.N., H.D., No. FLR 1680/8-III, dated 8th July 1971 (M.G., Pt. IV-B, P.1029)
54. Amended by G.N., H.D., No. SLC. 1071/79-PR., dated 18th October 1972 (M.G., Pt. IV-B, P.1586)
55. Amended by G.N., H.D., No. SLC. 1072/79-PR., dated 28th October 1972 (M.G., Pt. IV-B, P.1788)
56. Amended by G.N., H.D., No. FLR 1974/1-III-A, dated 7th August 1974 (M.G., Pt. IV-B, P.1392)
57. Amended by G.N., H.D., No. FLR 1974/1-III-A, dated 7th August 1974 (M.G., Pt. IV-B, P.1392)
58. Amended by G.N., H.D., No. FLR 0172/2-XXIX-P.R., dated 1st January 1975 (M.G., Pt. IV-B, P.905)
59. Amended by G.N., H.D., No. FLR. 0176-XXVIII-P.R., dated 1st September 1976 (M.G., Pt. IV-B, P.2003)
60. Amended by G.N., H.D., No. BPA. 2076/1-XXVIII-P.R., dated December 1976 (M.G., Pt. IV-B, P.1977)
61. Amended by G.N., H.D., No. BPA.2076/XXVIII-PR., dated the 3rd March 1977 (M.G., Pt. IV-B, P.369)
62. Amended by G.N., H.D., No. BPA. 2076/3-XXVIII-PR., dated the 3rd March 1977 (M.G., Pt. IV-B, P.324)
63. Amended by G.N., H.D., No. BPA. 2076/4-XXVIII-PR., dated the 3rd March 1977 (M.G., Pt. IV-B, P.325)
64. Amended by G.N., H.D., No. SLC. 1077/28-PR., (Part V) dated December 1977 (M.G., Pt. IV-B, P.675)
65. Amended by G.N., H.D., No. BPA. 2079/267-LPRO-2, dated 7th March 1979 (M.G., Pt. IV-B, P.732)
66. Amended by G.N., H.D., No. BPA. 2079/1-PRO-2, dated 8th August 1979 (M.G., Pt. IV-B, P.1548)
67. Amended by G.N., H.D., No. BPA. 2080/1-PRO-2, dated 22nd March 1980 (M.G., Pt. IV-B, P.237)