expression of feelings by words loses its significance when it comes to say few words of gratitudeyet to express it in some formhowever imperfectis duty towards those who helped offer my special gratitude to the almighty god for his blessings that has made completion of this book possible find myself with paucity of words to express my deep sense of gratitude to my father mr shrichand jagwani and mother mrs anita jagwani for their affectioncontinuous supportconstant encouragement and appreciative understanding my real strength has been the selfless cooperationsolicitous concern and emotional support of my husband mr bharat motwani no formal words can convey thanks to my children pearl and jahan who had to suffer lot because of my preoccupation with the book it is for their patienceforbearancelove and support throughoutthat this mind-absorbing and time-consuming task has been possible am indebted to the entire team of himalaya publishing house pvt ltd and mr srivastav for his sincere effortsunfailing courtesy and co-operation in bringing out the book in this elegant form it has been real pleasure working with such professional staff am grateful to all those people whose constructive suggestions and work have helped me in enhancing the standard of the work directly and/or indirectly and brought the task to fruition dr bharti motwani