00415nam a2200145I 4500 OCP 311 TEA 1936 A018 Or. Walker, Helen Mary, Statistical tables; their structure and use / New York, Teachers college, Columbia university, 1936. v p., 1 ���., 76 p. 24 cm. Statistics Durost, Walter N. EK 12250 12250 0 0 0 311_000000000000000_TEA_1936_A018_OR 0 61651 LBA LBA A018 2017-08-11 311 TEA 1936 A018 Or. A09322 2017-08-11 2017-08-11 EK