1. Short profiles of the guest editors

   Editorial Introduction Pages: 4 - 5

2. Editorial

   Editorial Introduction Pages: 7 - 8

3. Environmental factors and allergic airway diseases

   • Andrea Antico

   ReviewPaper Pages: 321 - 329

4. Gene expression in allergenic pollen

   • A.H. Munshi

   ReviewPaper Pages: 331 - 334

5. Hawaii: an ideal model for international aerobiological research

   • Harold E. Schlichting Jr.

   OriginalPaper Pages: 335 - 337

6. Comparison of two pollen counting methods of slides from a hirst type volumetric trap

   • Paloma Cariñanos
   • Jean Emberlin
   • Eugenio Dominguez-Vilches

   OriginalPaper Pages: 339 - 346

7. Experimental results about Platanus pollen deposition

   • Emma Bricchi
   • Giuseppe Frenguelli
   • Gianfranco Mincigrucci

   OriginalPaper Pages: 347 - 352

8. Frost periods and beginning of the ash (Fraxinus excelsior L.) pollen season in Basel (Switzerland)

   • Annie Gérard Peeters

   OriginalPaper Pages: 353 - 359

9. Pollen viability as a bio-indicator of air quality

   • Orietta Iannotti
   • Gianfranco Mincigrucci
   • Giuseppe Frenguelli

   OriginalPaper Pages: 361 - 365

10. Aeromycoflora in the Central Milk Dairy of Calcutta, India

    • Nimai Barui
    • Sunirmal Chanda

    OriginalPaper Pages: 367 - 372

11. Temporal and geographical variations in grass pollen seasons in areas of west0ern Europe: an analysis of season dates at sites of the European pollen information system

    • Jean Emberlin
    • Siegfried Jaeger
    • Catherine Bartlett

    OriginalPaper Pages: 373 - 379

12. 30 years of studies of grass pollen in Basel (Switzerland)

    • Ruth M. Leuschner
    • Heinz Christen
    • Reinhard Vonthein

    OriginalPaper Pages: 381 - 391

13. Comparison of airborne spore concentrations and fungal allergen content

    • Barbara Flückiger
    • Theo Koller
    • Christian Monn

    OriginalPaper Pages: 393 - 396

14. Airborne fungal spores and the thunderstorm of 24 June 1994

    • Ursula Allitt

    OriginalPaper Pages: 397 - 406

15. A change from grass pollen induced allergy to tree pollen induced allergy: 30 years of pollen observation in Switzerland

    • Thomas Frei
    • Ruth M. Leuschner

    OriginalPaper Pages: 407 - 416

16. Aerobiology, allergenicity and biochemistry of three pollen types in Berhampore town of West Bengal, India

    • Dola Boral
    • Kashinath Bhattacharya

    OriginalPaper Pages: 417 - 422

17. Evaluation of the effect of some biocides against organisms isolated from historic monuments

    • A.B. Blazquez
    • J. Lorenzo
    • G. Gómez-Alarcón

    OriginalPaper Pages: 423 - 428

18. Airborne fungal spores in dust present in archives: pProposal for a detection method, new for archival materials

    • Oriana Maggi
    • Anna Maria Persiani
    • Mauro Scorrano

    OriginalPaper Pages: 429 - 434

19. Airborne microorganisms in a subterranean archaeological area of the basilica of San Lorenzo in Lucina (Rome)

    • Michela Monte
    • Romolo Ferrari

    OriginalPaper Pages: 435 - 439

20. Aerobiological monitoring of the ''Sistine Chapel'': airborne bacteria and microfungi trends

    • Riccardo Montacutelli
    • Oriana Maggi
    • Nazzareno Gabrielli

    OriginalPaper Pages: 441 - 448

21. Flowering calendar of grasses in Srinagar, Kashmir Himalaya (India)

    • A.H. Munshi

    BriefCommunication Pages: 449 - 452

22. Airborne allergenic pollens in Padua: 1991–1996

    • Marina Giorato
    • Francesca Lorenzoni
    • Guido Marcer

    BriefCommunication Pages: 453 - 454

23. Antimicrobial effects of three plants (rubia tinctorum, carthamus tinctorius and juglans regia) on some airborne microorganisms

    • Sedigheh Mehrabian
    • Ahmad Majd
    • Iman Majd

    BriefCommunication Pages: 455 - 458

24. News

    Announcement Pages: 459 - 460

25. Forthcoming meetings

    Announcement Pages: 461 - 462