00359nam a2200133 a 450000500170000002000150001708200210003210000230005324500610007626000310013730000180016870000180018670000210020420251203090450.0  a0471280577  a547.038,bD, mur  aMurray, Robert D.H  aNatural coumarins: occurrence,chemistry and biochemistry  aNew YorkbJohn wileyc1982  aix,702p, 23cm  aMendez, Jesus  aBrown, Stewart A