20 April
Unforgettable: The Timeless Legacy of Luther Vandross
OV Digital Desk
20 April: Remembering Zu Chongzhi on Birthday
OV Digital Desk
20 April: Tribute to Bernard Katz
Suman Kumar
20 April in Indian and World History
OV Digital Desk
Tribute to Eduard Slavoljub Penkala
OV Digital Desk
20 April: Tribute to Dorothy Irene Height
OV Digital Desk