Lasers and laser related equipment - Test methods for laser beam parameters - Beam widths, divergence angle and beam propagation factor (ISO 11146:1999); German version EN ISO 11146:1999— 18 стр.
Animal feeding stuffs: Methods of sampling and analysis - Screening on the antibiotics tylosin, virginiamycin, spiramycin, bacitracin-zinc and avoparcin at sub-additive levels in compound feed by a microbiological plate test
