Five more undergraduates have been given one month of probation for repeated parking violations in the second crack-down within a month, Dean Delmar Leighton revealed last night. Yesterday's action brought to 12 the number of students punished by the Administration for violations of University and city parking regulations.

Leighton said that the worst offenders on the list sent to his office by police will be punished under the new system. Normally the list includes all students with more than five parking tickets.

Despite protests by victims, Leighton refused to reveal the exact number of offenses necessary before disciplinary action is taken. He referred to his earlier statement that "the flagrancy of their violations rather than the violations themselves," is the cause of the action.

"We're doing this so the community will see the University is acting with some perception of the parking problem," Leighton said of the new policy.

As grounds for this move, Leighton cited the "Discipline" section of "Regulations for Students at Harvard College" which provides for punishment of "offense against law and order or failure to be have with maturity and responsibility expected of a Harvard student."

The March crack down is not borrow, the first time the University has disciplined students for parking misdemeanors, Leighton pointed out.

As in earlier cases, students protected the Administration's action as being too where we were going wrong," one victim said.

Seven students were placed on probation in the first action, March 10. All were juniors or seniors in good academic standing with at least eight, and in some cases 12, tickets for illegal parking during the past academic year.