H_2 Pure Rotational Lines in the Orion Bar

H_2-bearing damped Lyman-alpha systems as tracers of cosmological chemical evolution

H_2D^+: a light on baryonic dark matter?

H_2O maser and a plasma obscuring torus in the radio galaxy NGC 1052

H_2O megamaser emission from FR I radio galaxies

H_2^{16}O and H_2^{18}O Maser Emission from Gas-Dust Clouds

H_2_ infrared line emission from S 140: a warm PDR.

H_2_O maser emission from irregular variables.

H_2_O maser emission from semiregular variables.

H_2_O masers without associated diffuse HII regions: an earlier evolutionary phase?

H_2_O^+^, CO^+^, and dust in Comet P/Swift-Tuttle.

H_3^(2+) molecular ion in a strong magnetic field: a triangular configuration

H_3^{++}$ molecular ion in a strong magnetic field: triangular configuration

H_alpha emission fluxes and lithium abundances of low mass stars in the young open cluster IC 4665

H_alpha Emission from High-Velocity Clouds and their Distances

H_alpha Emission Line Morphologies in Markarian Starburst Galaxies

H_alpha emission line morphologies of Markarian starburst galaxies

H_{2}O^{+} in Spectra of Comet Bradfield (1974b)

H_αLuminosity and Star Formation of Galaxies in HCGs

Hα Star-Formation Rates for the z=0.84 Galaxy Cluster CLJ0023+0423B