000			00604nam a2200193Ia 4500
001			000000201691
008			230524s9999 xx 000 0 und d
040			_cUDSM
050			_aQA3.R46 no.7920
100	1		_aVan Leijenhorst, D. C. _eAuthor
245	1	2	_aA combinatorial proof of a theorem by F. A. Grunbaum on sets of differences
260			_aNijmegen _b : Catholic University, Department of Mathematics, _c1979
300			_a1p. _c ; 21cm.
490			_aReport 7920
650			_aCombinatorial analysis
650			_aCombinatorial set theory
650			_aDifference sets
942			_2lcc _cRRPT
999			_c72625 _d72625