TY - GEN AU - Spivak, Michael TI - [A] Comprehensive introduction to differential geometry: vol. 4 SN - 091409873X (hbk. ): U1 - 516.36 23rd PY - 1999/// CY - Houston: PB - Publish or Perish, KW - Geometry, Differential KW - Mathematics N1 - Include bibliography and index ER -