Seven academic books, authored by Viharadhikari, Bellanwila Raja Maha Viharaya Ven. Dr. Boralesgamuwe Pemaratana Thera, inclusive of his dissertation for his doctorate degree, ‘Buddhist greeting practices, offerings and rituals, on the basis of Dharma’ will be launched during a ceremony held at National Library and Documentation Services Board auditorium, Colombo 7 on Monday (6).