Shukla, R.S. A textbook of plant ecology: including ethnobotany and soil science/ R.S. Shukla and P.S. Chandel. - 11th ed., rev ed. - New Delhi: S. Chand and Company LTD., 2007. - viii, 544 p.: ill.; 23 cm. Includes index. ISBN: 8121905486 Standard No.: 9788121905480 Subjects--Topical Terms: Plant ecology--Textbooks. LC Class. No.: QK901 / S58 2007