1. A. Sattar:
Soilborne Disease Research Laboratories, Botany Department, University of Karachi, Karachi, Pakistan
2. M. Abid:
Soilborne Disease Research Laboratories, Botany Department, University of Karachi, Karachi, Pakistan
3. A. Ghaffar:
Soilborne Disease Research Laboratories, Botany Department, University of Karachi, Karachi, Pakistan