It takes the average reader 3 hours and 32 minutes to read The Vitamin A Story by Richard D. Semba
Assuming a reading speed of 250 words per minute. Learn more
Intriguing reading for specialists and the interested public alike This book shows how vitamin A deficiency -- before the vitamin was known to scientists -- affected millions of people throughout history. It is a story of sailors and soldiers, penniless mothers, orphaned infants, and young children left susceptible to blindness and fatal infections. We also glimpse the fortunate ones who, with ample vitamin A-rich food, escaped this elusive stalker. Why were people going blind and dying? To unravel this puzzle, scientists around the world competed over the course of a century. Their...
The Vitamin A Story by Richard D. Semba is 207 pages long, and a total of 53,199 words.
This makes it 70% the length of the average book. It also has 65% more words than the average book.
The average oral reading speed is 183 words per minute. This means it takes 4 hours and 50 minutes to read The Vitamin A Story aloud.
The Vitamin A Story is suitable for students ages 12 and up.
Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.
When deciding what to show young students always use your best judgement and consult a professional.
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