- hard drive architecture
- harmful microorganisms - beer production
- harmonic waves
- harvest theory
- hazardous waste disposal
- Heads of enterprises - Dictionaries
- heads of enterprises - education - Poland - 1990
- heads of enterprises - work - Poland - Lodz - forecasts
- health care units
- Health risk - Poland - Lodz (region)
- heat
- heat and mass transfer
- heat balance
- heat conduction
- heat conduction of microheterogeneous bodies
- heat dissipation
- Heat engine - Periodicals
- Heat engineering
- heat engines
- heat exchange
- heat exchange apparatus
- heat exchange process
- heat exchangers
- heat flow
- heat generation
- heat loss
- heat machines - thermodynamics
- heat machines - thermodynamics - tables
- Heat of evaporation
- heat penetration coefficient
- Heat recovery
- heat storage
- heat theory
- heat transfer
- Heat transfer
- heat transfer and drying
- heat transfer coefficient
- heat transmission
- Heat transport in fluid flows
- heating
- Heating
- heating by radiation
- Heating - Congresses
- heating devices
- Heating - Equipment and supplies
- Heating - Equipment and supplies - Lab Textbooks
- Heating - Periodicals
- heating with electricity
- heavy metals
- Hellenistic architecture
- hemp
- Hemp
- Hemp - Crops
- Hemp - Processing
- Hemp production and trade
- heparin
- heritage education
- heritage issues
- Heritage-listed architecture systems
- heritage perception
