0 Information 174,442 βΉοΈ | 1 Philosophy and Psychology 161,809 π | 2 Religion 423,445 ππ½ | 3 Social Sciences 881,483 π« | 4 Language 118,029 π¬ | 5 Mathematics and Science 274,025 π¬ | 6 Technology 639,380 π‘ | 7 Arts and Recreation 651,545 π¨ | 8 Literature 865,381 π | 9 Biography and History 551,058 πΏ |

50 General Science 23,070 π¬ | 51 Mathematics 51,324 β | 52 Astronomy 15,217 π | 53 Physics 26,339 π | 54 Chemistry 15,632 β | 55 Earth sciences & geology 24,738 π | 56 Fossils & prehistoric life 6,049 π | 57 Life Sciences 36,781 π | 58 Botany 15,433 πΏ | 59 Zoology 59,442 πΌ |

510 General Mathematics 12,936 β | 511 General Principles 4,547 π | 512 Algebra 6,483 + | 513 Arithmetic 4,371 π’ | 514 Trigonometry; topology 1,087 π© | 515 Analysis 7,200 Ξ£ | 516 Algebraic geometry 3,891 V | 517 Calculus 811 β« | 518 Numerical analysis 500 π» | 519 Applied Mathematics, Probabilities 9,498 π |

512.0 320 | 512.1 Systems of algebra 284 | 512.2 Numeric equations; Imaginary expressions 606 | 512.3 Algebraic equations; Maxima and minima 121 | 512.4 Series; Fractions; Binomial theorem; Taylor's theorem 303 | 512.5 Combinatory analysis 876 | 512.6 Proportion and progression 51 | 512.7 Involution and evolution 832 | 512.8 Higher algebra 517 | 512.9 Problems and tables 919 |

512.80 3 | 512.81 Theory of numbers (see 511.1 Systems of arithmetic) 164 | 512.82 Theory of equations; Complex variable (See also 517.8) 12 | 512.83 Determinants 2 | 512.84 Symmetric functions | 512.85 Elimination; eliminants and discriminants 2 | 512.86 Tansformations; Substitutions 74 | 512.87 Quantics 5 | 512.88 Invariants; Covariants; Contravariants 1 | 512.89 156 |

512.890 1 | 512.891 | 512.892 | 512.893 | 512.894 2 | 512.895 13 | 512.896 39 | 512.897 48 | 512.898 | 512.899 |