This book contains articles on various subjects. If you look at the contents page, you will get an idea of the range of subjects I have dealt with. But the main focus is on two books Amarakosa, the Sanskrit dictionary cum thesaurus and Brihat Samhita of Varahamihira, an encyclopaedia in Sanskrit. The commentaries on Amarakosa give us enormous information. But not all the commentaries are available in English. I have collected as much information as possible through a Sanskrit scholar.