Ekti kalyankar durghatana (On scientific inventions) /
Sahjahan, Selina
Ekti kalyankar durghatana (On scientific inventions) / Selina Sahjahan, Tapan Sahjahan - 1st ed. - Dhaka : Muktadhara, 1986. - 103 p. : ill. ; 20.5 cm.
Science - General
1997-07-22
Scientific discoveries
Scientific experiments
500
Ekti kalyankar durghatana (On scientific inventions) / Selina Sahjahan, Tapan Sahjahan - 1st ed. - Dhaka : Muktadhara, 1986. - 103 p. : ill. ; 20.5 cm.
Science - General
1997-07-22
Scientific discoveries
Scientific experiments
500