books boost at fixed intervals
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# Fixed Duration Boost
# Fixed Ratio Boost
# future time periods
# cosmic time periods
# Derivation of short time periods
# The time periods she wrote down in her diaries
# Effect from different time periods
# Time periods and eras
# Equal time system
# Equal time transfers
# Examples of time constants
# Time constants in electrical circuits
# Time constants in neuroscience
# constant cycle time
# The time between sessions
# Members time period
# Documentation of the time period
# Game time
# The origin of the time period
# Concept and time period
