[Class : 41] Distance Learning Courses; Correspondence Courses, Distance Learning; Conducting Of Distance Learning Courses; Organization Of Distance Learning Courses; Teaching Of Foreign Languages; Distance Learning Services Provided Online; Teaching Assessments For Counteracting Learning Difficulties; Consultancy In The Field Of Learning Difficulties; Organization Of Courses Using Programmed Learning Methods; Organization Of Courses Using Open Learning Methods; Organization Of Courses Using Distance Learning Methods; Conducting Distance Learning Instruction At The Secondary Level; Conducting Distance Learning Instruction At The Primary Level; Conducting Distance Learning Instruction At The College Level; Personal Development Training; Personal Development Courses; Development Of Educational Materials