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040 |a EAP  |b gre  |e AACR2 
082 0 |2 21  |a 570 
100 1 |a Schaefer, Gerhard 
245 1 0 |a Systems thinking in biology education/  |c by Gerhard Schaefer 
260 |a Paris:  |b UNESCO. Division of Science, Technical and Environmental Education,  |c 1989 
300 |a 45 σ. :  |b εικ., σχήμ. ;  |c 30 εκ. 
490 0 |a Science and technology education. document series / Division of Science Technical and Environmental Education, UNESCO  |v 33 
504 |a Βιβλιογραφία: σ. 44-45. 
650 1 0 |a Biology 
650 1 0 |a Biology  |x Study and teaching 
650 7 |a Δομή και λειτουργία του κυττάρου  |x ΦΥΕ 31 
710 |a United Nations Educational  |b Scientific and Cultural Organization  |b Division of Science, Technical and Environmental Education 
710 0 |a United Nations Educational.  |b Scientific and Cultural Organization. 
710 0 |b Division of Science, Technical and Environmental Education 
952 |a GR-PaHOU  |b 59cc79436c5ad13446fc2a74  |c 998a  |d 945l  |e 570 SCH  |t 1  |x m  |z Books