Back to the Abstract

	1 Introduction
	2 Observations
	3 General parameters of the PNe
	4 The SWS and LWS spectra
	5 Line fluxes
	6 Physical conditions of the PDRs
	7 PDRs versus shocks
	8 H2 in NGC 7027, Hb 5 and NGC 6302
	9 Atomic, ionized and molecular mass
	10 General discussion
	11 Summary and conclusions
	References

	List of tables
	List of figures