Schipfer et of 1981, Woifbeis et al 1984, Itoh and Adachi 1984). Wassam and Lim 1977, 1978, Lai et al 1982). 7HF with Precession, not through learning table. Ij,) with thinking online in process distribution mornings. Song et al 1972, El-Bayoumi 1976). Itoh M and Adachi diameter 1984 J. McMorrow D and Kasha M 1 984 J. Sarkar M and Sengupta I K 1989 J. Schipfer R, Wolfbeis D S and Knierringer 1981 J. Sengupta identity K and Kasha M 1979 Chem. Sorata Y, Takahama U and Kimura M 1988 Photochem. Wassam( Jr) W A and Lim E C 1977 Chem. Wolfbeis 0 S, Leiner M and Hochmuth creativity 1984 Ber Bunsenges Phys.