1. Professor Edgar Lederer 75 years old

   • L. S. Ettre

   Editorial Pages: 299 - 299

2. Relationship between the average molecular polarizabilities of polycyclic aromatic hydrocarbons and their retention indices determined on various stationary phases

   • H. Lamparczyk
   • D. Wilczyńska
   • A. Radecki

   Originals Pages: 300 - 302

3. Performance evaluation of slurry-packed capillary columns for liquid chromatography

   • J. C. Gluckman
   • A. Hirose
   • M. Novotny

   Originals Pages: 303 - 309

4. Measurement of diffusion coefficients in multicomponent gas mixtures by the reversed-flow technique

   • G. Karaiskakis
   • N. A. Katsanos
   • A. Niotis

   Originals Pages: 310 - 312

5. Influence of intermolecular interaction with the eluent on the retention of phenol and aniline on polar and non-polar surfaces

   • A. A. Aratskova
   • A. V. Kiselev
   • Ya. I. Yashin

   Originals Pages: 312 - 314

6. Thermodynamic characteristics of the activity of selected chromatographic sorbents

   • T. Kowalska

   Originals Pages: 315 - 317

7. Qualitative gas chromatographic analysis of bacterial amines as their Schiff bases and other derivatives

   • A. Tavakkol
   • D. B. Drucker

   Originals Pages: 318 - 321

8. High-performance LC Bi-electrode amperometric flow-through detector with a carbon-dropping mercury sensor-electrode system

   • W. Kutner
   • W. Kemula

   Originals Pages: 322 - 327

9. Esterification of C₁−C₈ carboxylic acids to n-butyl esters in aqueous solutions for their gas chromatographic analysis

   • I. Molnár-Perl
   • M. Szakács-Pintér

   Originals Pages: 328 - 332

10. Highly sensitive differential pulse amperometric detection of second generation anti-tumor platinum compounds in HPLC effluents

    • W. J. F. van der Vijgh
    • H. B. J. van der Lee
    • H. M. Pinedo

    Originals Pages: 333 - 336

11. Correlations between retention data of isomeric alkylbenzenes and physical parameters in reversed-phase micro high-performance liquid chromatography

    • K. Jinno
    • K. Kawasaki

    Originals Pages: 337 - 340

12. Elution characteristics of some solutes used to measure the column void time on reversed-phase stationary phases in micro-HPLC

    • K. Jinno
    • N. Ozaki
    • T. Sato

    Originals Pages: 341 - 344

13. Quantitative Auswertung von Dünnschichtchromatogrammen. Literatursammlung

    • E. Ebel

    Book Reviews Pages: 345 - 345

14. Announcement

    Announcement Pages: 345 - 345

15. New products

    Announcement Pages: 346 - 351