00721nam a2200229Ia 45000010006000000050017000060070003000230080041000260400025000670410008000920820018001001000017001182450082001352500014002172600050002313000029002816530011003106530014003219420012003359520127003479990017004742118320240114000547.0ta060302s1897       a   g     b000 u 465 u  aCotton College,Assam  a465  a535bH 351 El  aHeath, R.S.. 0aAn Elementary Treatise on Geometrical Optics /cR.S.Heath.hTextual Documents  a1st ed. /  aCambridge :bAt The University Press ,c1897.  a234p. :bBib., ;c18cm .  aOptics  aG-Physics  2ddccBK  001040708Circulation (G)aSKBLbSKBLd2012-02-01f00000l0o535 H 351 Elp823.1r2024-01-14 00:00:00t1w2012-02-01yBK  c21165d21165