Ludhiana: Students of GNDEC have made a low cost automatic stamping machine which can be utilized in offices like post offices and offset printing presses. Explaining the advantahge of this machine, ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. Stamps printed from ...