This commemorative volume written by a scholar of Ahmadiya Sect on the eve of Quin-centenaries' of Guru Nanak's birth, is a tribute of this Muslim sect to Guru Nanak for his monotheistic concept of God. Comparing the monotheism of God head propounded by Guru Nanak with the differing concepts of the prophets of other religions, the author vindicates Guru Nanak's concept of monotheistic nature of God. The volume is analytical, comparative and derivative. It runs like a mathematical theorem to prove its thesis[edit]