The human factor in Agricultural Management. Warszava: Panst. wyd. nauk, 1970.
The human factor in Agricultural Management. Warszava: Panst. wyd. nauk, 1970.
(1970) The human factor in Agricultural Management, Warszava: Panst. wyd. nauk.
(1970). The human factor in Agricultural Management. Proceeding of the first I.A.A.E. Intereuropean seminar Warsaw, May 1968. Warszava: Panst. wyd. nauk,.
The human factor in Agricultural Management: Proceeding of the first I.A.A.E. Intereuropean seminar Warsaw, May 1968. Warszava: Panst. wyd. nauk; 1970.