00336nam a2200097Ia 4500008004100000082001900041100004200060245009000102260003800192300000800230140113s9999    xx            000 0 und d  a311(02)   K7.2  a"Chakrabarti,  I.M. & Laha,R.G. etc."  a"Handbook of methods of applied statistics, volII :Planning of surveys & Experiments"  a1967bJohn Wiley & SonscNew York  a160