a) wikipedia http://en.wikipedia.org/wiki/Mba:
The MBA designation originated in the United States, emerging from the late 19th century as the country industrialized and companies sought out scientific approaches to management. The core courses in the MBA program are designed to introduce students to the various areas of business such as accounting, marketing, human resources, operations management, etc. Students in some MBA programs have the option to select an area of concentration and focus approximately one-third of their studies in this area.
b) wikipedia http://en.wikiversity.org/wiki/Master_of_Business_Administration
„A Master in Business Administration (MBA) is unlike many other academic programs. While most Master programs provide a further specialization within a particular school or discipline (such as biology), an MBA is typically interdisciplinary, drawing from the fields of psychology, sociology, economics, accounting and finance.
Completing an MBA requires a substantial time commitment; if you work through all the concepts referenced, then one can expect to dedicate around 2,000+ hours.
02) Resurse: MBA in Romania