000 00303nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _aNR:041971
_bRRC.20
245 0 _aReport on an experiment comparing thirty tapping systems
260 _aThailand
_bRRC
_c1971
490 _aRRC report 20/71
942 _cBK
999 _c24497
_d24497