elementary topological Abelian group

aecidium clerodendri black smoker complex brimstone burner gas card tube colour intelligence curble Euler's circuit IGSNS multidimensional nuclear magnetic resonance necessary product Obdacher Sattel odd - job man presphenoid silvery-grey surculus sucker TP (temperature profile) trichloroacetates trickle flow hydrodesulfurization trinkly unshielded twisted pair