Before you buy materials, choose the location for your built-in cabinet and cut the hole. Then you can adjust the dimensions if your wall studs arenât exactly 14-1/2 in. apart. Remember, your walls are full of pipes, wires and ducts, so you need to do a little detective work to find a good spot.
Vitamin A Elmer V. McCollum and M. Davis discovered vitamin A during 19121914. In 1913, Yale researchers, Thomas Osborne and Lafayette Mendel discovered that butter contained a fat-soluble nutrient soon known as vitamin A. Vitamin A was first synthesized in 1947.
Folic acid Lucy Wills discovered in 1933. B6 Paul Gyorgy discovered in 1934. Vitamin C In 1747, Scottish naval surgeon James Lind discovered that an nutrient (now known to be vitamin C) in citrus foods prevented scurvy. It was rediscovered by Norwegians, A. Hoist and T. Froelich in 1912.