Chandrasena, N R and Rao, A N  (2017) Commemorating 50 Years (1967-2017) 50th Anniversary Celebratory Volume, Asian-Pacific Weed Science Society (APWSS); Indian Society of Weed Science (ISWS), India and The Weed Science Society of Japan (WSSJ).    Asian-Pacific Weed Science Society (APWSS), Hyderabad.  ISBN 978-81-931978-5-1