September 2, 1901: Gregorio Tiongson Velasquez was born in Calumpit, Bulacan
On September 2, 1901, Gregorio Tiongson Velasquez, botanist and known as father of Philippine Phycology, was born in Calumpit, Bulacan.
On September 2, 1901, Gregorio Tiongson Velasquez, botanist and known as father of Philippine Phycology, was born in Calumpit, Bulacan.