J C van Lenteren, "Quality Control and Production of Biological Control Agents: Theory and Testing Procedures" 2003 | pages: 341 | ISBN: 0851996884 | PDF | 5,1 mb
S. K. Donaldson, C. B. Thomas - Geometry of Low-Dimensional Manifolds: 1. Gauge Theory and Algebraic Surfaces Published: 1991-01-25 | ISBN: 0521399785 | PDF | 276 pages | 11.65 MB