00372nam a2200121Ia 450000500170000000800410001708200150005810000220007324500880009526000430018330000090022665000150023520240814120827.0240813s9999||||xx |||||||||||||| ||und||  a311.21 KUL  aKulldorff, Gunnar 0aContributions to the theory f estimation from grouped and partially grouped samples  aNew YorkbJohn Wiley & Sons Inc.c1961  a144p  aStatistics