![](http://www.alamy.com/thumbs/6/B34BCF42-833B-41E6-B945-23170B7B5192/2MCX2N2.jpg)
White alphabet letter in word PDE (abbreviation of permitted daily exposure, partial differential equation or personal development education) on black
White alphabet letter in word PDE (abbreviation of permitted daily exposure, partial differential equation or personal development education) on black pegboard background
Size: 5978px × 3985px
Photo credit: © Thanee Hengpattanapong / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: abbreviation, background, banner, black, board, cleaning, daily, derivatives, development, differential, education, equation, exposure, function, independent, learning, mathematics, measurement, multiple, multivariable, partial, pegboard, permitted, personal, pharmaceutical, problem, qualification, relation, science, solution, study, unknown, validation, variable, word