000 00303nam a2200097Ia 4500
008 211217s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
245 0 _aMcGrawHill Yearbook Of Science and Technology...1971
260 _bMcGrawHill Book Company
_aNewYork
_c1972
942 _c1
999 _c150433
_d150433