by Pen, L. J.; Brock, Margaret A.;
Year: 1984., Callno: 502.72(941) BRO [Q]
Book
by Williams, P. J.;
Pen, L. J.;
Year: 1995
Book
by Pen, L. J.; Potter, I. C.;
Year: 1990.
Article
by Weaver, D. M.; Pen, L. J.; Reed, A. E. G.;
Year: 1994., Callno: 556.51(941) WEA [PQ]
Book
by Western Australia Waterways Commission.; Thurlow, Beverley.; Pen, L. J.;
Year: 1994., Callno: 581.9(941) THU
Book
by Western Australia Waterways Commission.; Pen, L. J.; Majer, K.;
Year: 1993., Callno: 556.53 PEN
Book
by Western Australia. Water and Rivers Commission.; Pen, L. J.; Hutchison, June.;
Year: 1999., Callno: 556.51(941) PEN
Book
by Pen, L. J.; Western Australia. Water and Rivers Commission.;
Year: 1997., Callno: 556.51(941) PEN [Q]
Book
by Majer, K.; Pen, L. J.; Western Australia Waterways Commission.;
Year: 1993., Callno: 556.53 PEN [PQ]
Book
by Western Australia. Water and Rivers Commission.; Natural Heritage Trust (Australia); Pen, L. J.;
Year: 2001., Callno: 556.53(941) STR [Q]
Book