00304nam a2200109 a 450000500170000002000150001708200190003210000250005124500520007626000420012830000240017020251203091525.0  a0805300864  a001.642,andb_  aAndrews, Gregory, R.  aConcurrent programming: principles and practice  aRedwood city: Benjamin/Cummingsc1991  axviii, 638p. 24 cm.