Dar

تاريخ النشر: 1946 .
المساهمون: <a href='https://dar.bibalex.org/ar/Contributor/ContributorItems.aspx?contributor=Biodiversity%20Heritage%20Library&format_id=1'> Biodiversity Heritage Library
المجموعات: <a href='https://dar.bibalex.org/ar/Collection/CollectionItems.aspx?collection=Biodiversity%20Heritage%20Library&format_id=1'> Biodiversity Heritage Library
التصنيف: <a href='https://dar.bibalex.org/ar/Category/CategoryDetails.aspx?mainCat=Others&format_id=1'> Others

Basic methods for the calibration of sonar equipment.