Bachelor of Science in Nursing
I know about that The Bachelor of Science in Nursing (BSN, BScN) also known in some countries as a Bachelor of Nursing
yes 
i have heard course of study is typically three or four years.
yeah i have four years
requiring completion of more courses on math and natural sciences that are more typical of BSc degrees (e.g. calculus, physics, chemistry, biology) and BN curriculums more focused on nursing theory, nursing process, and teaching versions of general science topics that are adapted to be more specific and relevant to nursing practice. Nursing school students are generally required to take courses in social and behavioral sciences and liberal arts, including nutrition, anatomy, chemistry, mathematics, and English. In addition to those courses, experience in physical and social
Bachelor of Science in Nursing
The Bachelor of Science in Nursing (BSN, BScN) also known in some countries as a Bachelor of Nursing (BN) or Bachelor of Science (BS) with a Major in Nursing is an academic degree in the science and principles of nursing, granted by an accredited tertiary education provider. The course of study is typically three or four years. The difference in degree designation may relate to the amount of basic science courses required as part of the degree, with BScN and BSN degree curriculums