Proceedings of the ISA International Conference and Exhibit.Proceedings of the ISA International Conference and Exhibit (1982 : Philadelphia, Pa.).NC, ISA,1982.
Proceedings of the ISA International Conference and Exhibit.Proceedings of the ISA International Conference and Exhibit (1982 : Philadelphia, Pa.).NC, ISA,1982.
Proceedings of the ISA International Conference and Exhibit.Proceedings of the ISA International Conference and Exhibit (1982 : Philadelphia, Pa.).NC, ISA,1982.
