1 “... to further study the subject. These six chapters divided into three sections will be an eye-opener for all...”

2 “... researchers to ponder on. These 12 chapters available in four sections will be an eye opener for all who...”

3 “... to ponder into. These eleven chapters available in five sections will be an eye-opener for all who are doing...”

4 “... in three sections and will be an eye-opener for all who systematic researchers in these fields....”