[Author] O. I. Reinov [Title] On bases and approximation conditions in banach spaces [AMS Subj-class] 47B10. Hilbert--Schmidt operators, trace class operators, nuclear operators, p-summing operators, etc. [Abstract] We consider the notion of bases in Banach spaces and closely related the so called approximation and bounded approximation properties for these spaces. This paper is supposed to be a small general survey of some results obtained by the author and some other mathematicians mostly in the last 20 years. [Comments] AmSTeX, 6 pp., English [Contact e-mail] orein@orein.usr.pu.ru