Ir. Martina A Langi, M.Sc., Ph.D.
http://id.portalgaruda.org/index.php?ref=author&mod=profile&id=304592
Sam Ratulangi University, Indonesia
Ir. Martina A Langi, M.Sc., Ph.D.
http://id.portalgaruda.org/index.php?ref=author&mod=profile&id=304592
Sam Ratulangi University, Indonesia