Depending upon the conditions, either nucleation or growth may be predominant over the other, and as a result, crystals with different sizes and shapes are obtained (Control of crystal size and shape constitutes one of the main challenges in industrial manufacturing, such as for pharmaceuticals).
For the region, see San Fernando Valley. San Fernando is a city located in the San Fernando Valley, in the northwestern region of Los Angeles County, California. It is completely surrounded by the City of Los Angeles.
The Los Angeles County provides a variety of services in and around the City of San Fernando, including the San Fernando Library, Animal Care and Control services, Industrial Waste, Environmental Health Department, and Vector Control. San Fernando Library. 217 N. Maclay Avenue, San Fernando.