T.M.Gokulachandran K. T., . (2000). Subsidlary Chemistry. Calicut: Manjusha Publication.
T.M.Gokulachandran K.Joby Thomas, . 2000. Subsidlary Chemistry. Calicut: Manjusha Publication.
T.M.Gokulachandran K.Joby Thomas, . Subsidlary Chemistry. Calicut: Manjusha Publication. 2000.