What does NISA stand for?

National Inconvenienced Sportsmen's Association - Later, NHSRA (EA)

National Industrial Sand Association (EA)

National Industrial Service Association - Later, EASA

National Industrial Stores Association (EA)

National Institute of Supply Associations

New Information Services Architecture (SAUS)

Nicotiana sanderae hort. ex W. Wats. (pro sp.) - Scientific name - Family: Solanaceae - USDA National Plant Data Center symbol - Botany - Taxonomy (USDA)

Northeast Intercollegiate Sailing Association (PSS)

Numerically Integrated Elements for System Analysis (MCD)