The Committee on Housing and Undergraduate Life voted yesterday to recommend to Dean May that all Harvard and Radcliffe Houses establish co-residency in 1971-72.

The Committee's plan proposes a five-to-one male-female ratio in each Harvard House. To achieve this ratio, 272 additional men must move to Radcliffe and 353 additional women must move to Harvard.

In the event that the number of students willing to move is insufficient to provide a female component of roughly 40 women in each House, some Houses might have to-remain non-co-residential. In such a case, Dean May is enpowered, in consultation with the sub-committee on co-residency and the Radcliffe dean of Residence, to determine which Harvard Houses will have no women.

The success of the plan depends on one crucial and unknown variable-the number of people who are willing to move to help establish the necessary ratios. One participant said yesterday, "If not enough people are willing to move, people's hopes for full co-residency will go down the drain."

In order to determine this variable accurately, students will be required to decide where they want to live next year earlier than usual, possibly by February 26.

The Committee's plan is flexible enough to allow for co-residency even if a five-to-one ratio cannot be established in every House. However, according to one spokesman, the members feel that at least 40 women in each House are necessary to make people feel comfortable.

Certain Problems...

The Committee hopes the implementation of its plan would alleviate certain problems which have arisen from this year's form of co-residency. One informed source said yesterday, "Differences have emerged among the Houses which are destructive to the whole House system."

To help implement class balance, a quota will be set for the first time on the number of Radcliffe seniors allowed to live off-campus.