Supervisory behavior in education /

ανά Harris, Ben M.
Έκδοση 1975

In-service education for staff development /

ανά Harris, Ben M.
Έκδοση 1989

Developmental teacher evaluation /

ανά Harris, Ben M.
Έκδοση 1986

Personnel administration in education: leadership for instructional improvement /

Έκδοση 1979

Personnel administration in education : leadership for instructional improvement /

Έκδοση 1992