MarObs_1972_01_Vol_XLII_No235
MarObs_1972_04_Vol_XLII_No236
MarObs_1972_07_Vol_XLII_No237
MarObs_1972_10_Vol_XLII_No238
MarObs_1973_01_Vol_XLIII_No239
MarObs_1973_04_Vol_XLIII_No240
MarObs_1973_07_Vol_XLIII_No241
MarObs_1973_10_Vol_XLIII_No242
MarObs_1974_01_Vol_XLIV_No243
MarObs_1974_04_Vol_XLIV_No244
MarObs_1974_07_Vol_XLIV_No245
MarObs_1974_10_Vol_XLIV_No246
MarObs_1975_01_Vol_XLV_No247
MarObs_1975_04_Vol_XLV_No248
MarObs_1975_07_Vol_XLV_No249
MarObs_1975_10_Vol_XLV_No250
MarObs_1976_01_Vol_XLVI_No251
MarObs_1976_04_Vol_XLVI_No252