Bibliography missing publication date.

[Rich Shepard]

The bibtex source includes date = {1986}. The citation is (Cronshey et al.
1986), but the reference is,
Cronshey, R., McCuen, R.H., Miller, N., Rawls, W., Robbins, S., & Woodward,
D. Urban Hydrology for Small Watersheds. Tech. rept. TR-55. Natural
Resources Conservation Service.

No date. Is this because I don't have the proper LyX file converter
selected? I'm puzzled.

Rich