World Stats Mar - June

1. In March 1876 authority of telephone was received that was formed by Aleshander Graham bell
2. In 1876 April Villiam Harvi was discovered the blood circulation
3. In 1969 April artificial heart was replanted and got victory of operation
4. In 1988 April artificially formed lamp 'Dolly' naturally of laid a lamp
5. Scientist of Mary Query in 1903 May rays act sodium explorations was dedicated in Parish university
6. In 1993 June India 'Pruthvi' satellite was sent in sky