Engel Arthur.
problem solving problem solving stratages / [[Book] :] Arthur Engel. - u.s.a : Springer., 1988. - 403 P. ; 24 cm.
0387982191
510.76
/ EP
problem solving problem solving stratages / [[Book] :] Arthur Engel. - u.s.a : Springer., 1988. - 403 P. ; 24 cm.
0387982191
510.76
/ EP