Ecological principles /
Tribe, Michael A.
Ecological principles / by Michael A. Tribe, Michael R. Eraut & Roger K. Snook. - Cambridge [Eng.] ; New York : Cambridge University Press, 1975. - viii, 160 p. : ill. ; 30 cm. - Basic biology course ; book 4 : Unit 2, Organisms and their environment . - book 4. Basic biology course ; .
Bibliography: p. 158. and index.
0521206588. 0521206383
Ecology--Programmed instruction.
574.52 / TRE 1975
Ecological principles / by Michael A. Tribe, Michael R. Eraut & Roger K. Snook. - Cambridge [Eng.] ; New York : Cambridge University Press, 1975. - viii, 160 p. : ill. ; 30 cm. - Basic biology course ; book 4 : Unit 2, Organisms and their environment . - book 4. Basic biology course ; .
Bibliography: p. 158. and index.
0521206588. 0521206383
Ecology--Programmed instruction.
574.52 / TRE 1975