Volume 37.1, Issue 73, April 1997, Pages 234-246
B.I. AGAG; E.I. SHEHATA; DAWLAT, M. AMIN; NAIMA, A. AFIFI; E.A. AFIFI
Volume 36.2, Issue 72, January 1997, Pages 235-243
O. A. SALAMA; B.I AGAG; E.A. AFIFI; NAEMA,A. AFIFI; I.A. EL-SEIDI
Volume 36.2, Issue 72, January 1997, Pages 244-254
T.H. SHEASHE; E.A. AFIFI; S. M. NADA