title: A Search for the 110 larr 111 Transition of Interstellar Thioformaldehyde.
abstract: A search has been made for the 1(10) <-- 1(11) transition of thioformaldehyde in interstellar clouds where formaldehyde is known to exist. Failure to detect this transition indicates that the ratio of thioformaldehyde abundance to that of formaldehyde is probably less than the abundance ratio of sulfur to oxygen.
authors.forename: N J
authors.initials: NJ
authors.lastname: Evans
authors.forename: C H
authors.initials: CH
authors.lastname: Townes
authors.forename: H F
authors.initials: HF
authors.lastname: Weaver
authors.forename: D R
authors.initials: DR
authors.lastname: Williams