sponsored by the National Fertilizer Solutions Association. sponsored by the National Machine Tool Builders' Association. sponsored by The National Machine Tool Builders' Association. National Fertilizer Solutions Association. sponsored by the California Circuits Association. sponsored by The National Machine Tool Builders' Association sponsored by the Southwestern Prtroleum Short Course Association. sponsored by the Pioneer Valley Section. sponsored by International Telecommunications Satellite Organization. sponsored by International Dasalination Association ... [et al.].